Another easier trick for hot glue is a blow drier, lol, heat it until soft and peel it off, if its a large amount, heat it until almost liquid then hit it with a keyboard co2 spray can in the upside down position to get the cold liquid form and quickly remove the glue before it cools... The iso alc works as a great not to dangerous/chemically solvent, its also great when you want to dry something wet, for instance, say you are applying a decal, wet the surface with water/alc/dawn {I never measure the amounts, I do a lot of water a little alc and a drip of dawn} then stick the decal on and squeegee out the boubles and liquid, the alc is the secret ingredient to getting it perfect every time, it kind of stays behind then evaporates, you would think it would ruin the glue but it doesn't... I learned that from the company that used to do my truck lettering...
Some one also once told me that if you want to stick something on that you need to easily remove after but want to stick until you pull it off, wipe it with lemon pledge spray, my wife does this for the holiday sticky decoration things she puts up, but them are super easy to take off anyway, so I am not sure how it works... I can tell you to NEVER pledge your hard wood floors, you can kill someone... In my old house I pledged the dining room furniture before a dinner we had and 3 people fell, because the overspray went on the floor and then I just wiped it in, made it super slippery...
