I use "Simple Green" when my dogs tangle with skunks. I have also used it to get the skunk smell out of my son's coat when he had to shoot one. So my thinking is, if it gets skunk smell out of a coat, then it might get musty smell out of fabric. Be sure to wash it with it twice. You can get it at Costco or maybe an hardware store, but I have not seen it a grocery stores.