I'm going to direct you over to the the original post from http://chrisandrobinsnest.blogspot.com for directions. I found this on pinterest and thought it sounded like a good idea so I tried it!
|Yuck! The one on the right is a new sponge, the one on the left is after I cleaned my couch!|
I know the before and after pictures aren't that amazing, but look what came off on the sponge! That alone impresses me! The rubbing alcohol didn't leave any new discoloration or watermarks. I was happy with the results.