Know what your carpet is made of first
Almost every carpet cleaning mistake comes from treating all carpets as the same thing. They are not, and the difference is chemistry.
Wool is a protein fibre, structurally similar to human hair, and it reacts to cleaning products the way hair does. It is damaged by alkaline chemicals: anything with a pH above about 8 attacks the fibre structure, causing shrinkage, felting, browning and colour loss. Bleach, ammonia and many general-purpose carpet shampoos fall into that category. Look for products marked WoolSafe Approved or described as pH neutral, and never use "oxy" powders or anything chlorine-based.
Synthetic fibres such as nylon, polypropylene and polyester are considerably more tolerant of general cleaners, though a stain-protection treatment on the carpet can react with some products, so test first regardless.
Natural plant fibres such as jute, sisal and seagrass are the fussiest of all about water. They mark, shrink and can go brown when wetted, so they generally need dry cleaning methods or a professional.
If you do not know what you have, treat it as wool until you find out. Being too gentle costs you nothing; being too aggressive is permanent.
The maintenance that prevents the problem
Most carpet damage is abrasive rather than chemical. Grit walked in from outside works its way to the base of the pile and cuts the fibres every time somebody stands on it.
- Vacuum regularly, weekly as a minimum and more often in hallways and living rooms. This is genuinely the most important thing you can do.
- Doormats at every entrance, inside and out. Most of the dirt in a house arrives on shoes.
- Consider a no-shoes rule, which sounds fussy and reduces wear dramatically.
- Rotate rugs every few months so wear and fading spread evenly.
- Move furniture slightly from time to time so the same crush points do not become permanent.
- Keep rugs out of direct sunlight, or accept that the exposed side will fade.
The same applies to upholstery and curtains, which people forget because they are vertical. Curtains in particular collect a great deal of dust and rarely get cleaned.
Dealing with spills
Speed matters more than technique. A fresh spill is a spill; a dry one is a stain.
- Blot, never rub. Rubbing pushes the spill into the backing and, on wool, causes felting, which cannot be undone.
- Work from the outside in, so you are not spreading the edge outwards.
- Use a clean white cloth. A coloured one can transfer its own dye.
- Cold water first, not hot. Heat sets many stains and is bad for wool.
- Test any product on an inconspicuous patch, behind a door or under a sofa, before it goes anywhere visible.
- Do not over-wet. Moisture that reaches the backing takes days to dry, and slow drying is what causes browning, shrinkage and smell.
- Dry it quickly with towels and airflow, not a hair dryer.
For most food and drink spills, cold water and a little pH-neutral detergent will do. Enzyme cleaners suit organic stains such as pet accidents. Solvent-based products are for grease and should be used sparingly.
Two things that ruin carpets: bleach, and scrubbing.
Carpets when you move
This is where it stops being general household advice and starts costing money.
Cleaning is the single most common reason for deposit deductions at the end of a tenancy, and carpets are the most disputed part of it. Two things prevent an argument: dated photographs at check-in and again at check-out, and cleaning the carpets once the property is empty rather than around the furniture.
Worth knowing that under the Tenant Fees Act 2019, a landlord generally cannot require professional carpet cleaning as a contractual condition of an assured shorthold tenancy. The property must still be returned in the condition it was let in, allowing for fair wear and tear, and a flattened traffic path in a hallway is wear rather than damage.
On moving day, the risks are dragging and dirt. Furniture should be lifted rather than pushed, floor protection laid on the routes in and out, and crews should be told which rooms have delicate flooring. A good removals crew does this as standard.
Furniture dents in a carpet you are keeping will usually lift. Ice cubes left to melt in the dent, or a damp cloth and a warm iron held above the pile rather than on it, followed by gentle brushing.
Storing rugs properly
If a rug is going into storage, how you prepare it matters more than where it goes.
- Clean and dry it first. Anything stored damp will develop mould, and any food residue attracts moths.
- Roll, never fold. Folds crease permanently and crack the backing over time. Roll pile side in, around a tube if you have one.
- Wrap in breathable material, cotton sheeting or Tyvek rather than plastic. Sealed plastic traps moisture against the fibres.
- Guard against moths on wool. Moth larvae eat protein fibres, and a stored wool rug is an ideal habitat. Clean thoroughly first and use cedar or a moth deterrent.
- Store flat or upright, off the floor, never with heavy items stacked on top.
Our container storage is dry, clean and ventilated, which handles the environment. The preparation is the part that is on you.
Frequently asked questions
How often should I vacuum my carpets? At least once a week, and more often in hallways, living rooms and anywhere shoes are worn. Regular vacuuming removes the grit that abrades the fibres, which is what actually wears a carpet out.
What cleaning products are safe for wool carpets? pH-neutral products, ideally marked WoolSafe Approved. Avoid bleach, ammonia, oxy powders and general-purpose alkaline carpet shampoos, all of which damage the protein structure of wool.
Should I rub or blot a carpet stain? Blot, always, working from the outside of the spill inwards with a clean white cloth. Rubbing drives the spill into the backing and can permanently felt wool fibres.
Do I have to pay for professional carpet cleaning at the end of a tenancy? For tenancies granted since the Tenant Fees Act 2019, a landlord generally cannot require it as a contractual condition. The property must still be returned in the condition it was let in, allowing for fair wear and tear.
How should I store a rug long term? Clean and dry it first, roll it rather than folding, wrap it in a breathable material rather than plastic, protect wool against moths, and keep it off the floor with nothing stacked on top.
How do I get furniture dents out of a carpet? Leave ice cubes to melt in the dent and blot the water, or hold a warm iron above a damp cloth without touching the pile. Then brush the fibres upright. Both work on most pile carpets.
How we can help
RMV Storage & Removals has worked across London for over fifteen years, handling house and office removals with proper floor protection, professional and after-builders cleaning, packing services and materials, and container storage delivered to your door, across every area we cover.
For more on cleaning and deposits, see our short history of the vacuum cleaner, or work through the moving house checklist if a move is coming. Otherwise get in touch.
Written by Riki Migliori, Director at RMV Storage & Removals. Originally published April 2015. Fully reviewed and updated summer 2026.