Are you talking about the "cage carpets"? If so, I used to use those for my colubrids.
I would rinse them off outside with the jet setting on the garden hose (get all the poo off), then put them in a bucket with bleach for about 10 to 15 min. Then rinse them really good with the hose and let them air dry (air drying took all the bleach odor away and they were as good as new!).
They come two to a package so, keep one clean to change out! I tried the soap, didn't feel they got clean enough. Also, don't put them in the dryer...all this tan, gritty powder stuff comes off. I haven't used these for years, and I think there is still some of that gritty stuff in my dryer (made my wife mad!)
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Brian & Crissy Miller
BC Reptiles
Reptile Breeders and Outfitters
PO Box 1324
Princeton, TX 75407
469/688-3822
info@bcreptiles.net
www.bcreptiles.net