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How to clean a polyester couch
Decipher the couch tag.
Polyester couches should have a tag, usually found somewhere underneath the cushions. The tag will have one of the following letters or letter combinations written on it: w, s, sw, or x. these codes let you know what kind of cleaners you can use on your couch.
The letter w indicates water cleaning only, while s indicates solvent cleaning only. The tag sw means either a water or solvent based cleaner is safe.