sticky situation?
My use has been:Acetone should be safe for rubber in small quantities. Goto hardware store ask for acetone, or where terpintine is. Read label, should say safe (sort of) for rubber. Just put on some gloves, and well ventilated area. Put a bit on a rag and start scrubbing. It's just a cleaner. It won't eat through the rubber unless you just leave it on forever. Wash with soap and water when done.Acetone is very toxic for people, so it may not be avail, so any industrial cleaner liquid which smells like gasoline will work. just read the label. Hypalon is pretty hardy material. And there are several layers to take the abuse. Make sure your kids and pets are stored properly before use. It will kill grass also.hope this helps.