Got a bottle of the grocery store brand for $.99 when hubs got that spray insulation on his hands while we were doing the door. He put too much in and tried to catch it (don't ask me why) when it came oozing back out.pure acetone is available at any neighborhood walfart in the finger nail polish aisle...$2.50 for 16 oz...can also be saved & reuzed 3-4 timez ez ppp