I am making some Christmas gifts, and needed canning jars. I guess in Winona you have to special order those things as well. So, I decided to re-use jars that had store bought jam in them. But the glue on the label was hard to remove. I tried extremely hot water, which worked pretty well. I read somewhere to try peanut butter, so I did. I put a pretty thin layer of creamy peanut butter where the glue was, and scrubbed away with an old dish cloth. It actually worked well. Give it a try.