I put my bottles in a glass vase. I fill the inside of the bottle with hot water. Then I put two squirts of dish soap on the outside. Fill the vase with hot water. I let it sit for 2-3 hours. Then scrap the label with a razor blade. It's important to scrap from side to side not top to bottom. The labels come right off. A little wash off with a scrubber sponge with some some soap and hot water and the bottle is good to go. The key is scrapping from side to side. Top to bottom is when the glue becomes a pain in the neck.
Chris
Chris