Sofas, carpets and soft furnishings

Where the obvious answer is wrong

Cases where the treatment that removes the problem is the treatment that ruins the surface it is on.

• How do I get grease off a vinyl seat without leaving a mark on it?

  The coated-fabric trade body classifies vinyl, polyurethane and silicone coated fabrics as SOFT-SURFACE materials despite their being smooth and non-permeable, and states that hard-surface cleaners, sanitizers and disinfectants are not intended for soft surfaces and could damage them. It then names hand sanitisers among the substances that STAIN coated fabric. So the alcohol wipe that removes the grease is on the list of things that mark the seat, and the mark it leaves is not a soil sitting on the coating that can be wiped off again.

Assessed and found wanting

Widely repeated techniques in this area that the evidence does not support, or supports only in part.

• Scrub a carpet stain to get it out

  Does not work

  The instinctive response to a spill, and the one the carpet trade association specifically prohibits. Scrubbing damages the carpet itself.

• Mould needs bleach

  Does not work

  The environmental regulator does not recommend biocides as routine, directs detergent and water, and says the part everyone misses: killing mould is not enough, because it must also be removed.

• Hot water for a blood stain

  Does not work

  The instinct is that hot water cleans better. On this one stain it is precisely the wrong move, and it is not recoverable.

• A stronger solution cleans better

  Does not work

  The trade body that publishes carpet stain procedures puts this in capitals: NEVER USE A STRONGER CONCENTRATION. That is a claim about damage, not about thrift.

• Letting mud dry before you touch it

  Disputed

  Sensible-sounding, and the carpet trade's own entry for mud recommends no drying-out period at all.

• Using laundry detergent on a carpet stain

  Does not work

  Excluded outright by the carpet trade, and the reason it now gives is one nobody guesses: optical brighteners.

• A stain method that works on cotton works on anything

  Does not work

  The wool body warns against exactly this, and gives wool a sequencing rule cotton advice does not have: solvent first, allowed to evaporate, only then water.

• Spraying disinfectant instead of cleaning

  Does not work

  Marketed as the thorough option, and it is — against organisms. On a dirty surface it can fail at both jobs at once, because soil shields the organisms it is meant to kill.

• Bleach ruins outdoor fabric

  Does not work

  On solution-dyed acrylic the manufacturer specifies bleach, at a stated ratio, for mildew. That permission comes from how the fibre was dyed and does not transfer to fabric that looks the same.

• Steam cleaning sets a pet urine stain

  Disputed

  Something real happens and the explanation is wrong. Heat does not fix urine the way it fixes blood — it makes the damage that was already there visible, and wakes the smell.

The records

• Sofa

  Thing to clean

  A large soft surface whose cleaning code was decided at the factory. Two manufacturers in this register both begin by prohibiting the same vacuum attachment.

• Sofa armrest

  Component

  The part of a sofa that takes skin contact rather than spills, so what builds up there is body oil — and it darkens gradually enough to go unnoticed.

• Carpet

  Material or surface

  A textile floor covering where the instinctive response to a spill — scrubbing — is the one the trade body specifically rules out.

• Upholstery fabric

  Material or surface

  Carpet advice does not transfer to it. The manufacturer's rules start with what NOT to vacuum with, and water is on the prohibited list rather than the method list.

• Coated upholstery

  Material or surface

  Smooth, non-permeable and still a SOFT surface — which is why the hard-surface spray that seems obviously right for it is the thing most likely to wreck it.

• Solution-dyed acrylic

  Material or surface

  Outdoor fabric with the colour built into the fibre rather than applied to it — which is why its maker specifies bleach where the rest of the catalogue prohibits it.

• Viscose and rayon

  Material or surface

  A cellulose fibre that the professional body describes as very sensitive to water — and the shape can be lost to a dissolving finish rather than to the fibre.

• Hot-water extraction

  Method

  Inject solution, recover it immediately. The recovery is the method — what is left behind is what causes the next problem.

• Hot-water extraction machine

  Equipment

  Injects solution into a soft surface and pulls it back out again. The extraction half is what distinguishes it from simply making a carpet wet.

• Upholstery attachment

  Equipment

  The vacuum head two separate manufacturers name by function rather than by brand. Suction without agitation, which is the only safe combination on a napped surface.

• White cotton cloth

  Equipment

  Specified by colour in every stain procedure this catalogue has read, and the reason is diagnostic rather than aesthetic.

• Cleaning product residue

  Stain or problem

  What the last clean left behind. It attracts soil, so the surface gets dirty faster — and the usual response is to use more of what caused it.

• Residue and resoiling

  Science

  The cleaned patch that goes dirty faster than the carpet around it is not a coincidence and not bad luck. It is the cleaner you left behind, and the trade body treats it as a hazard with its own section.