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If you have moved house and suddenly your car spots after every wash, your technique has not got worse. Your water has changed.

What a water spot actually is

Tap water carries dissolved minerals, mostly calcium and magnesium. When a droplet dries on paint, the water evaporates and the minerals stay behind as a visible ring. That is a deposit, and it will wash off if you catch it.

Leave the same droplet in hot sun and something worse happens: the concentrated mineral solution etches into the clear coat and leaves a mark in the surface. That is etching, and washing will not touch it — it needs a dedicated water spot remover or machine polishing.

Why the UK varies so much

Water hardness follows geology. Broadly, areas over chalk and limestone — much of the south and east of England — have hard water. Areas over granite and older rock — large parts of Scotland, Wales, the north west and the south west — tend to be soft.

The practical test costs nothing: if your kettle furs up, your shower screen spots and soap does not lather easily, you are in a hard water area and your car will spot readily.

Working around hard water

1. Never wash in direct sun. This matters far more in hard water areas — you are racing evaporation.
2. Work panel by panel. Wash and rinse one section, dry it, then move on. Do not soap the whole car and come back to it.
3. Sheet the water off. Free-flowing water removes most of the volume before drying.
4. Dry immediately and completely. Air drying is not an option in hard water areas.
5. Use a drying aid. It speeds up drying and adds lubrication at the same time.
6. Get water out of the gaps. Mirrors, badges, grilles and shuts drip onto dry paint and leave the worst spots of all.

Protection helps, but is not immunity

A hydrophobic surface sheds water into fewer, larger droplets that run off rather than sitting. Less standing water means fewer spots. But a droplet that does stay put on a coated panel still leaves minerals behind when it dries — protection reduces the problem, it does not remove it.

Removing spots that are already there

Fresh deposits usually come off with a wash or a quick detailer. Older, bonded deposits need an acidic water spot remover, which dissolves the mineral rather than abrading it. Etched spots that have gone into the clear coat need polishing.

A quick test: wet the panel. If the marks vanish while wet and come back as it dries, they are surface deposits. If they are still visible when the panel is wet, the clear coat is etched.

We make removers for both paint and glass in the paint maintenance and glass cleaning ranges.

The one habit that fixes most of it

Do not let water dry on the car. That is genuinely the whole thing. Every other piece of advice here is a way of making that easier.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

A careful wash followed by a careless dry undoes everything. Drying is where a lot of swirl marks come from, because by that point the paint is clean and any grit left on it — or on your towel — goes straight into the clear coat under pressure.

Why cars mark while drying

• Grit in the towel. A drying towel dropped on the ground once is finished. Bin it or wash it before it touches paint again.
• Dragging. Pulling a towel across a panel puts far more shear force into the paint than laying and lifting.
• Air drying. Letting a car dry itself leaves every dissolved mineral in the water behind as a water spot.
• Working in the sun. The car dries faster than you can, and you get spots before you reach the far side.

The method

1. Sheet the water off first. Take the nozzle off the hose and let water flow over the panels — surface tension carries most of it away and halves your drying work.
2. Use a large, plush drying towel. Lay it flat on the panel.
3. Pat and lift, or draw it very gently in one direction. No scrubbing, no circles.
4. Work top down, and use a second dry towel once the first is saturated.
5. Do shuts, mirrors and the boot lip last — that is where trapped water runs out and streaks a finished panel.

Drying aids make it easier and safer

A drying aid is sprayed onto the wet panel before you dry it. It adds lubrication, so the towel glides rather than grips, and it leaves a little protection behind at the same time. The reduction in friction is the real benefit — less friction is less marring.

Our hydrophobic quick detailers work as drying aids, and the BASIC hydro dry protect is designed for exactly this step.

Blowers and compressed air

Blowing water off is the only genuinely touchless drying method, and it is excellent for the places towels cannot reach: grilles, badges, wing mirrors, wheel spokes, panel gaps. Those are the spots that drip onto a dry panel ten minutes later and leave a run.

You do not need specialist equipment to benefit — even blowing out the mirrors and grille before towel-drying will save you going back over the car.

Water spots, and why some areas suffer more

Hard water leaves more minerals behind, so parts of the UK are far harder on cars than others. If your kettle furs up quickly, your car will spot quickly. In hard water areas, never let a car air dry, and never wash in direct sun.

If spots have already etched in, a dedicated water spot remover is needed — washing will not shift mineral deposits. We cover this in our water spots guide.

Looking after drying towels

• Wash them separately from everything else, especially from anything used on wheels.
• No fabric softener — it coats the fibres and destroys absorbency.
• Air dry or low heat. High heat melts microfibre and turns a soft towel into a scouring pad.
• Retire any towel that has been on the floor.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

Most wasted effort in car cleaning comes from doing things in the wrong order and then having to redo them. The sequence below is not fussiness — each step is there because getting it wrong means going back over work you have already done.

The order

1. Interior first. Vacuum and wipe down before you touch the outside.
2. Wheels and arches. Always before the bodywork.
3. Pre-wash. Snow foam or TFR, depending on how dirty the car is.
4. Rinse.
5. Contact wash. Two buckets, top down.
6. Decontamination, if needed. Iron fallout remover, tar remover, clay.
7. Final rinse.
8. Dry.
9. Glass.
10. Protection. Wax, sealant or a spray protectant.
11. Tyres and trim. Dressings last.

Why interior comes first

Two reasons. You will open doors, kick the sills and lean on panels while doing the interior — all of which puts marks on clean paint. And vacuuming throws dust into the air that settles on a wet car.

Doing the inside first also means that if you run out of time or the weather turns, you have finished the part that does not depend on it.

Why wheels come before paint

Wheel cleaners are the harshest products in a normal wash, and wheels carry the heaviest, most abrasive contamination on the car. Splashing that onto clean paint, or worse onto dry paint, is asking for trouble. Do them first, rinse well, then move on.

Use separate buckets, mitts and brushes for wheels and never let them near your paintwork. Brake dust embedded in a wash mitt is sandpaper.

Why protection comes after glass

Glass cleaners are usually alcohol-based and will happily remove a fresh wax or sealant if they overspray onto the paint. Do the glass while the paint is still bare, then protect.

Why dressings come last

Tyre and trim dressings sling, run and transfer. Applied before the final wipe-down, they end up on your paint and in your microfibres. Applied last, on a dry tyre, they stay where they belong.

The one that catches everyone out

Decontamination — iron remover, tar remover, clay — strips protection. If you clay a car and then skip straight to drying and putting it away, you have left the paint completely bare. Decontamination and protection go together in the same session, always.

A shorter version for a maintenance wash

Not every wash needs all eleven steps. A maintenance wash on a protected car is: interior, wheels, pre-wash, rinse, contact wash, rinse, dry, glass, quick detailer. Fifteen minutes if the car is not far gone.

Products for each stage are grouped by job in our shop, and Fast Lane will build a kit for the order above if you would rather not pick them yourself.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

Ask ten people and you will get ten answers between “every week” and “when it rains”. The useful answer depends on what is landing on your paint, not on the calendar.

The rule that actually matters

Wash before contamination bonds, not after. Almost everything that damages paint — bird droppings, insect remains, tree sap, iron fallout, road salt — does its damage over time while it sits there. Removing it early is a wash. Removing it late is a correction job.

Rough intervals for UK conditions

• Summer, garaged, low mileage: every two to three weeks is usually plenty, with spot removal of droppings and bugs in between.
• Summer, parked outside under trees: weekly, and keep a quick detailer in the car.
• Winter, salted roads: every one to two weeks, and rinse more often than that if you can. Salt is the most damaging thing your car meets all year.
• High motorway mileage: traffic film builds fast; fortnightly at minimum with a proper pre-wash.

Winter deserves its own answer

Road salt is hygroscopic — it holds moisture against metal, which is exactly what accelerates corrosion. It collects in arches, on sills, around the boot lip and underneath, where you cannot see it.

A plain rinse of the underside and arches, with no shampoo at all, is worth more in January than a full detail. If you do nothing else through winter, rinse the salt off. See our guide on road salt and winter car care for the detail.

Does washing too often damage paint?

Washing does not damage paint. Bad washing damages paint. A properly done wash — pre-wash, rinse, two buckets, clean mitt, soft drying — puts in essentially no marring. A rushed wash with one bucket and a sponge puts in swirls every single time.

So the honest answer to “can I wash weekly?” is: yes, if your method is sound. If it is not, washing less often just means the damage accumulates more slowly.

What to check rather than counting days

1. Run a finger over the bonnet. Gritty means it needs washing.
2. Look at the lower quarter of the doors and the rear. Film shows there first.
3. Watch how water behaves. When beading stops, protection has gone and dirt will start bonding.
4. Check for droppings and sap after parking under trees, every time.

Between washes

Most of the value comes from small interventions. A dropping lifted the same day, a bug splatter wiped off after a motorway trip, a rinse of the arches after a salty week. None of these is a wash, and together they matter more than the interval.

Our BASIC range is built for exactly this kind of regular, no-fuss upkeep.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

Plenty of people in the UK have no driveway, no outside tap and nowhere to run a hose. The usual advice — two buckets, a pressure washer, a foam lance — assumes a house with a drive. Here is what actually works without one.

Accept the trade-off first

Without running water you cannot safely remove heavy, gritty dirt at home. Trying to wipe a filthy car with a spray bottle and a cloth is the fastest way to fill your paint with scratches. The realistic approach is a split routine:

• Heavy dirt: a jet wash or a trusted hand wash, occasionally.
• Everything in between: maintained at home with rinseless or waterless methods.

Done properly, this keeps a car looking better than a fortnightly full wash, because dirt never gets the chance to build up.

The waterless method, done safely

Waterless washing works by encapsulating light dirt in lubricating liquid so it lifts away inside the cloth rather than sliding across the paint. It is safe only on light dirt — dust, fingerprints, light film. Not on a car covered in winter grime.

1. Get plenty of clean microfibres out — ten or more. This is not the place to economise.
2. Work one small section at a time, roughly half a bonnet.
3. Spray generously. Under-spraying is what causes scratches.
4. Wipe in one direction with almost no pressure, then fold to a clean face.
5. Change to a completely fresh cloth the moment the one you are using looks dirty.
6. Buff dry with a separate plush cloth.

Work top down. The lower quarter of a car is always the dirtiest and is usually best left for a proper wash.

Rinseless washing, if you can carry a bucket

If you can fill a bucket indoors and carry it out, rinseless washing is a big step up. The solution encapsulates dirt so it can be wiped away without rinsing, and one bucket does a whole car. It handles moderate dirt far better than waterless and uses a fraction of the water of a hose wash.

What to keep in the boot

• A quick detailer for bird droppings and bug splatter — the two things that cannot wait.
• Four or five folded microfibres in a sealed bag so they stay clean.
• A glass cleaner. Streaky glass makes a clean car look dirty.
• An interior detailer — interiors are entirely independent of your water situation.

Protection does more work here

If you cannot wash often, protection matters more, not less. A well-protected car sheds dirt, holds less of it, and cleans up far faster with a waterless product. Applying a quick sealant or protective detailer after each proper wash is the highest-value ten minutes available to anyone without a driveway.

Interior and glass are free wins

You do not need water for either. A car with a spotless interior and clear glass reads as a clean car even when the paint is not perfect. If your washing options are limited, put the effort here.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

Both go through a foam lance, both cover the car in white, and both are called a pre-wash. They are not interchangeable, and using the wrong one is why some people conclude that pre-washing does nothing.

The short answer

• Snow foam loosens and lifts loose dirt and dust so it can be rinsed off before you touch the paint. Usually pH neutral or close to it. Safe to use every wash.
• TFR (traffic film remover) is alkaline and breaks down oily, bonded road film. Far more effective on motorway grime and winter salt, and harder on your protection.

When snow foam is the right choice

A car that has done town miles in dry weather is carrying dust, pollen and light dirt. That comes off readily. A neutral snow foam clings, softens it, and lets you rinse most of it away before contact — which is the whole point of a pre-wash. It does this without touching your wax or sealant, so you can use it every single wash without shortening the life of your protection.

If your car is regularly washed and protected, snow foam alone will handle the great majority of your washes.

When you need a TFR

A car that has done a wet motorway run, or has been through a British winter, is carrying oily traffic film and salt. A neutral foam will sit on top of that and rinse off leaving the grey layer behind. The alkalinity of a TFR is what actually breaks the oily binder.

Signs you need a TFR rather than a foam:

• The car still looks dull grey after foaming and rinsing.
• The mitt goes brown-grey immediately on the first panel.
• It is winter, and the roads have been salted.
• The lower panels, sills and rear of the car are visibly filmed.

Using both

They are not rivals. A common routine through winter is a TFR on the lower half and the back of the car — where the film is worst — and a neutral foam over the whole vehicle. You get the cutting power where it is needed without stripping protection off the roof and bonnet for no reason.

What about the thick foam?

Thick, shaving-foam coverage looks impressive and sells a lot of product, but foam density is not the same as cleaning power. What matters is the chemistry and the dwell time — how long the product stays wet against the dirt. A clinging foam helps because it holds contact longer; a stiff foam that slides off in a sheet does not.

This is why concentrated gel formulas exist. They cling without needing to be whipped into a meringue.

Practical routine

1. Rinse loose dirt off first — foam on a dry, dusty car mostly wets the dust.
2. Apply your pre-wash bottom up.
3. Dwell as the label says, in the shade, never letting it dry.
4. Rinse top down.
5. Two-bucket contact wash with a neutral shampoo.

Both types are in our exterior washing range — the BASIC line for ready-to-use simplicity, ADVANCED for concentrates that go further.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

Drive fifty miles on a wet motorway and your car comes back a flat, dull grey. Rinse it and most of it stays. That layer is traffic film, and it is a different problem from ordinary dirt.

What it is made of

Traffic film is a mixture of road grime bound together with oily residue — diesel and exhaust deposits, tyre and brake wear, and whatever the road surface has shed. The oil is the important part. It is what makes the film cling to paint and glass, and what makes plain water run straight over the top.

This is why a rinse alone barely touches it, and why a shampoo aimed at gentle maintenance washing can struggle. A neutral shampoo is designed to lift dirt without stripping your wax. Traffic film needs something that can break down oil.

Where a traffic film remover comes in

A traffic film remover — TFR — is an alkaline pre-wash. The alkalinity is what cuts through the oily binder, so the grime lets go of the surface and can be rinsed away before you ever touch the car with a mitt.

That last point is the whole purpose. Every bit of grime you remove chemically is grime you are not dragging across your paint with a wash mitt. Traffic film is full of fine abrasive particles; removing it by contact is how cars end up covered in swirl marks.

How to use it in a wash

1. Rinse the car to remove loose dirt.
2. Apply the traffic film remover from the bottom of the car upwards, so the wetted area stays wet.
3. Let it dwell for the time on the label — and do not let it dry on the paint.
4. Rinse thoroughly, top down this time.
5. Follow with a normal two-bucket contact wash using a neutral shampoo.

Our ADVANCED TFR is a concentrated gel, so it clings to vertical panels instead of running into the gravel, and the BASIC version is a simpler alkaline foam for regular use.

Alkaline is not the same as harmless

Because it is alkaline, a TFR will shorten the life of a wax or sealant with repeated use. That is the trade-off and it is usually worth it in winter, when the film builds up faster than protection wears off. Points worth respecting:

• Never apply to hot panels or in direct sun.
• Do not let it dry — that is when staining happens, particularly on trim and wheels.
• Rinse thoroughly, including shuts, arches and under the sills.
• Expect to top up your protection more often through winter.

Traffic film on glass

The film on the inside of a windscreen is a related but separate problem — that one is off-gassing from the interior plastics, not the road. Outside, traffic film is exactly why headlights go dim and why wipers smear: you are wiping oily grime around rather than removing it.

A proper wash of the glass, followed by a dedicated glass cleaner, fixes the smearing that no amount of screenwash will.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

Bird droppings are not simply unpleasant. They are acidic, and they contain grit — which makes them one of the few things that can both chemically etch your clear coat and physically scratch it while you remove them.

How fast is fast?

There is no single number, because it depends on the bird’s diet, the temperature and whether your paint has any protection on it. What is consistent is the mechanism: as the dropping dries it contracts, and the clear coat underneath — softened by heat and by the acid — moulds slightly to its shape. When you finally remove it, the imprint stays.

On a hot day on unprotected paint, damage can begin in hours rather than days. In cool, damp UK weather you have longer. Either way, the answer is the same: remove it as soon as you see it.

The correct removal

1. Do not wipe a dry dropping. Ever. It is full of grit and you will drag it across the panel.
2. Soak it first. A quick detailer, a dedicated bug and grime remover, or even plain water works — the point is to rehydrate it so it releases.
3. Lay a damp microfibre over the top and leave it for a minute or two.
4. Lift, do not rub. Pick the cloth straight up with the dropping in it.
5. Fold to a clean face and gently wipe any residue with a second, clean cloth.
6. Bin that cloth face — do not put it back in the wash bucket.

Keep something in the car

This is the single most useful habit for anyone who parks outside. A small bottle of quick detailer and two folded microfibres in the door pocket means a dropping gets dealt with in the car park, not next Sunday. Our quick detailers are made for exactly this kind of spot job between washes.

Why protection matters here more than anywhere

A wax, sealant or ceramic layer is sacrificial. The acid attacks the protection first, and the protection is far easier to replace than clear coat. On a well-protected panel, a dropping removed within a day or two usually leaves nothing at all.

It also makes removal easier, because the dropping cannot key into a slick, hydrophobic surface the way it can into bare clear coat.

If there is already an imprint

A visible outline after cleaning means the clear coat has been etched. Light etching can often be removed by machine polishing; deeper etching may need more than one stage, and very deep marks may not come out at all without going further than is sensible on a road car.

Test the depth by wetting the area. If the mark disappears when wet and returns as it dries, it is usually shallow enough to polish out.

Practical prevention

• Avoid parking under overhead wires, lamp posts and roosting trees — birds return to the same perches.
• Keep paint protected, and top it up rather than letting it wear off entirely.
• Check the car when you get back to it, not when you next wash it.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

Park under a lime, sycamore or pine for an afternoon and you come back to a bonnet covered in sticky spots. Left alone, tree sap hardens into a resin that bonds tightly to the clear coat and, in strong sun, can etch a ring into it.

The instinct is to pick the spot off with a fingernail. Do not. That is how you turn a cleaning job into a polishing job.

Fresh sap versus baked-on sap

Fresh sap — still soft and tacky — often comes away during a normal wash, or with a quick detailer and a plush microfibre. Deal with it the same day and you are done in minutes.

Hardened sap has cured into a resin. Water and shampoo will not touch it. This needs a solvent-based tar and glue remover, which is formulated to break down resins, adhesives and petroleum-based deposits without attacking automotive paint.

The method for hardened sap

1. Wash and rinse the panel first so there is no grit in the area you are about to work on.
2. Apply a tar and glue remover to a clean microfibre pad rather than spraying it across the whole panel. You want it on the sap, not on every seal and trim piece nearby.
3. Hold it against the spot and let it dwell as the label says. Let the solvent do the work.
4. Wipe with light pressure in one direction. Repeat rather than pressing harder.
5. Wash the area again afterwards. Solvent removers strip wax and sealant, so that patch of paint is now unprotected.
6. Re-apply your wax, sealant or quick detailer to the area.

The step everyone forgets

That last point matters more than people think. A tar and glue remover does its job precisely because it is aggressive towards bonded contamination — and your layer of protection is, chemically speaking, bonded contamination. If you spot-treat five sap marks across a bonnet and drive off, you have five unprotected patches waiting for the next lot.

Always finish with protection. A quick detailer or spray sealant takes two minutes and closes the gap.

Sap on glass and trim

Glass tolerates far more, so you can work harder there. Be more careful on plastic trim, rubber seals and anything wrapped or vinyl-covered — solvents and plastics do not always agree. Test on a hidden corner first, and keep the product off matte finishes entirely unless the label says otherwise.

Preventing the next lot

• Avoid parking under limes and sycamores in summer — they are the worst offenders in the UK.
• Keep a layer of protection on the paint. Sap on a coated panel sits on top of the protection rather than bonding directly to clear coat, and comes off far more easily.
• Check the car after it has been parked under trees, rather than a fortnight later.

If a ring or dull patch remains after the sap is gone, the clear coat has been etched and needs machine polishing. See our guide on paint correction for what that involves.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.

Insect splatter is not just dirt sitting on top of the paint. Insect remains are acidic, and once they have baked on in summer sun they start to eat into the clear coat. Left through a warm week they can leave marks that no amount of washing will remove.

The rule with bugs is simple: soften first, wipe second, never scrub. Scrubbing dried insect remains drags hard fragments across your paint and puts in fine scratches that show up as swirls the next time the sun comes out.

Deal with them quickly

The single biggest thing you can do costs nothing: get them off sooner. A splatter removed the same evening comes away with almost no effort. The same splatter after ten days in August needs soaking, patience and sometimes a light polish afterwards.

If you cannot do a full wash, keeping a quick detailer and a clean microfibre in the boot is enough to deal with the worst of a motorway run when you get home.

The method

1. Rinse the front of the car to knock off loose grit. Dry insect remains plus dry grit is the worst combination for your paint.
2. Apply a dedicated bug remover to the bumper, bonnet leading edge, mirrors and windscreen surround. Work on cool paint in the shade — on a hot panel the product flashes off before it has done anything.
3. Let it dwell for the time given on the label. This is where the work actually happens; the chemistry is softening the bond so you do not have to.
4. Agitate very gently with a soft microfibre or a soft detailing brush. Light pressure only.
5. Rinse thoroughly, then carry on with your normal wash so nothing is left sitting on the paint.

Why a gel is easier on vertical panels

A thin liquid runs straight off a bumper and stops working within seconds. A gel formula clings to the surface, which means the product stays where you sprayed it and keeps working for the full dwell time. On front bumpers, mirror backs and the leading edge of a bonnet — all vertical or steeply angled — this is the difference between one pass and four.

Our ADVANCED range includes a gel bug remover for exactly this reason, and the BASIC range has a ready-to-use version if you would rather not think about it.

Bugs on glass

The windscreen takes the worst of it and is also the easiest to fix, because glass is far harder than clear coat. You can use more agitation here. Finish with a proper glass cleaner rather than leaving bug remover residue behind, or you will get smearing the first time you use the wipers.

What to avoid

• Dryer sheets, scouring pads and washing-up sponges. They shift the bug and take some clear coat with it.
• Household degreasers. Not formulated for automotive paint, and many will strip wax or sealant along with the insect.
• Working in direct sun. The product dries before it works and you end up scrubbing anyway.
• Pressure washing at close range. It will not remove a bonded insect and can damage trim.

If the mark is still there

A shadow left after the insect is gone usually means the acid has already etched the clear coat. That is no longer a cleaning job — it needs machine polishing to level the surface. It is also the best argument for protecting the paint in the first place: a waxed or coated panel gives the acid something to attack before it reaches your clear coat, and buys you time.

Before you start

Always read the label on the product you are using and follow the instructions on it for dilution, application and safety. Work in the shade on cool paint, and test anything new on a small, hidden area first — particularly on trim, wraps and finishes you are not familiar with.

Not sure which product fits the job? SWAG Fast Lane asks three quick questions and puts the right kit together for you.