Just last week I was spraying the back side of a framed quilt I won at an online auction, carfully peeled the backing way so as not to destroy the quilt (all hand done), sprayed the frame backing perfectly - except the bleach spray caught the breeze and ruined a brand new top. Tried to dye it - no luck. My last resort is to try to dye it black next - I love that blue! Cried for an hour over it.