I had a leaking water heater yrs ago & had a problem with my fabric. I found a university website that gave me excellent advice. I mean it really worked. Used borax & vinegar in the washer with hot water. Then you don't put it in the dryer you hang it on the clothesline in the sun. Both the borax & the sun will kill it dead. I still have a few of those pcs of fabric left & they are still in good condition. I can laugh about it now, picturing me & my sister laying YARDS of fabric on my lawn & on my clothesline.