question for everyone who heats waterers. I have two of those large waterer heaters that you can buy at the feed stores, those ones for $50. I use them for my large fowl in the winter because they drink a lot. well, the heated pad that is underneath has come unglued from the bottom of the metal part. Is there something I can use that would be safe to reglue it on? I do not want to throw them away as they do still work but is useless if they will not stick to the base part.