When you put the stripper on cover it so it stays wet. garbage bag does good op plastic wrap.Most times you should try to leave it on for more than 3 hours and keep it wet. You use less stripper this way.I also use the cheap Home Depot stuff,seems to work great but i dont do a lot of customer body work. I make the customer have it blasted(really lucky around here we have the best around,NODAMAGE)