Material
Synthetic carpet
Man made pile that tolerates most treatments better than wool does, and where over-wetting causes more failures than any cleaner.
- SurfacePorous
- WashingSpot only
- Colour run riskMedium
- Reviewed1 September 2026
What synthetic carpet can and cannot take
- Heat Use with care
- Water and soaking Use with care
- Acids, including vinegar Use with care
- Strong alkalis Use with care
- Solvents Use with care
- Chlorine bleach Use with care
- Abrasives Use with care
Always test on a hidden area first and let it dry before you treat the visible mark.
General rules for synthetic carpet
Blot, do not rub, and work inwards from the outer edge so the mark does not grow.
The risk on carpet is rarely the fibre. It is the amount of liquid. Anything that soaks past the pile into the backing and the underlay comes back up as the carpet dries, which is why a mark that looked gone in the evening is there again in the morning. Use small amounts, blot them straight back out, and let the pile dry fully before deciding whether to repeat.
Check the label
Find out which fibre it is before you use anything strong. Polypropylene is dyed in the melt, so the colour goes right through and diluted bleach does not remove it. Nylon and polyester are usually dyed after spinning, and bleach can take the colour out of both. If you do not know, treat it as nylon.
Stains on synthetic carpet
- Baby sick Lift off solids, blot with white towels, then work in a very small amount of cool dilute washing-up liquid an...
- Blood Blot the wet blood out with dry white cloth first, then blot with cold water on a damp cloth, working inwards...
- Body oil Blot free oil from synthetic carpet first. A small residual patch can use a maker-approved SEBO DUO-P treatme...
- Breast milk Blot from the outer edge inwards. Where care instructions allow, dab very little cold water onto the pile wit...
- Bronzer Lift loose bronzer from synthetic carpet before it is rubbed in. Blot cream bronzer, follow the material or c...
- Coffee Blot synthetic carpet from the outside in, then use very little cool water on a cloth if the carpet instructi...
- Concealer Lift thick concealer from Synthetic Carpet, blot without rubbing, then use a very small amount of diluted was...
- Cooking grease Lift and blot cooking grease from Synthetic Carpet, then use a small amount of diluted washing-up liquid only...
- Deodorant Vacuum the area first, then blot with a cloth wrung out in warm water with a drop of washing up liquid, worki...
- Hair dye Blot from the edge with white towels, then use the least possible cool, tested carpet-cleaning solution and e...
- Lipstick Lift lipstick from Synthetic Carpet with a blunt edge, blot without rubbing, then use a very small amount of...
- Motor oil Blot motor oil from Synthetic Carpet, absorb as much as possible, then use a small amount of diluted washing-...
- Nail polish Touch off accessible free polish at the surface without rubbing. Do not use clothing remover or pour nail rem...
- Period blood Blot the mark up with white cloths, then dab a solution of one teaspoon of washing up liquid in two cups of c...
- Pet urine Blot hard with white towels before adding anything. Find the care code under the cushion or frame. On W or WS...
- Sweat Blot with white towel, then dab with one drop of washing-up liquid in a cup of cool water. Work from the edge...
- Tomato sauce Lift tomato sauce from Synthetic Carpet, blot from the edge with a tested cool detergent solution, remove res...
Cleaners on synthetic carpet
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Bicarbonate of soda
Yes, safe
It sits on the fibre and vacuums out. The only real risk is leaving powder deep in the pile, which shows as a pale bloom when the carpet dries.
-
Biological laundry detergent
Only with caution
The fibre tolerates it, but a laundry detergent cannot be rinsed out of a carpet, and residue left in the pile attracts soil. Use a carpet or upholstery spotter instead where one is available.
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Household chlorine bleach
No, not recommended
Infection control guidance states that chlorine disinfectants must not be used on carpet because they bleach it. Carpet makers who allow bleach at all allow it only at one part in four on solution dyed polypropylene, and most people cannot be sure which fibre they have.
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Hydrogen peroxide
No, not recommended
Carpet cannot be rinsed, the peroxide keeps working while it dries, and a lightened patch in a fitted carpet cannot be cut out and replaced.
Most carpet sold in the UK is polypropylene, nylon or polyester. All three are far less absorbent than wool, which is why marks tend to sit in the pile rather than soak into the fibre, and why they come out more readily.
The fibre decides how far you can go
Polypropylene is dyed while the fibre is still liquid, so the colour is part of the strand. Carpet makers state that bleach can be used on it if it is diluted to one part in four, which is not true of nylon or polyester.
The backing decides how much liquid you can use
Underneath the pile is a backing, and under that an underlay. Neither dries quickly. Keeping the treatment in the top of the pile is most of the skill.
Similar materials
Sources
What we checked and when. Where a manufacturer instruction disagrees with anything here, follow the manufacturer.
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Spot and stain removal guide, National Carpet Cleaners Association
trade body
Trade body method of working from the outer edge of a mark inwards, blotting rather than rubbing at every stage, and using white cloth so no dye transfers into the pile.
Checked 1 September 2026
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Polypropylene carpet care and maintenance, JHS
manufacturer
Carpet manufacturer instruction to blot with white paper towel and work inwards from the edge, never to rub the pile, to dry between treatments, and that bleach is diluted to one part bleach in four of water if it is used at all.
Checked 1 September 2026
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Nylon carpet care and maintenance, Manx Tomkinson
manufacturer
Carpet manufacturer instruction to test every treatment on an out of sight area for colour change first, to blot rather than rub, and to avoid household detergents that leave residue and make the pile resoil quickly.
Checked 1 September 2026
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Types of carpet fibre, Carpet Foundation
trade body
UK trade body summary of how nylon, polypropylene and polyester behave, describing polypropylene as the stain free and easy to clean fibre of the three.
Checked 1 September 2026