Most carpet stains are much easier to remove if they've been left alone. The most common thing professional cleaners see is a stain that's been scrubbed with a household product, which pushes it deeper, spreads it wider, and leaves a sticky residue that turns into a dark patch within weeks.
Stains that respond well to professional cleaning
- Food and drink: tea, coffee, red wine, cola, gravy, curry and chocolate
- Mud and footprints: usually come out completely once dry soil is vacuumed first
- Grease and oil: including the grey traffic lanes in hallways and kitchens
- Blood: needs cold water and the right treatment; heat sets it
- Pet accidents: vomit, faeces and urine, plus the smell
- Candle wax and chewing gum: removed physically before cleaning
Stains that may be permanent
It's worth knowing these before you book so expectations are realistic:
- Bleach removes colour rather than adding it. It can't be cleaned out, only re-dyed or patched.
- Hair dye, fake tan and some food dyes can bond permanently with wool and nylon.
- Burns and melted fibres are damage, not staining.
- Old urine on wool can change the dye colour of the fibre itself.
Many of these can still be improved, and patch repairs are sometimes possible. A cleaner can usually tell you once they've seen it.
Pet urine and odour removal
A urine stain on the surface is usually a small part of a bigger patch underneath. Urine soaks through the carpet into the backing and underlay, and that's where the smell comes from, especially on warm or damp days. Pets also tend to return to the same spot if they can still smell it.
Effective odour treatment generally involves finding every affected area (often with a UV torch), applying an enzyme or oxidising treatment deep enough to reach the underlay, and then extracting. In severe cases, particularly where a spot has been used many times, the underlay and sometimes the carpet section need replacing. A good cleaner will be upfront about that.
Other smells
Smoke, damp and general mustiness can all be reduced by a deep clean, because much of the smell is held in soil and residue in the carpet. Persistent damp smells may point to a moisture problem in the building, which cleaning alone won't fix.
What to do in the meantime
Blot, don't rub. Use cold water rather than hot. Avoid bleach, washing-up liquid and strong household cleaners. Our full guide on how to remove carpet stains covers the most common spills step by step, and if it doesn't come out, a professional carpet clean is the next step.