I smashed a piece of gum into the sleeve of my shirt. I googled how to get it out and I tried the laundry detergent method first. Luckily it worked like a charm and I didn't even try any other hacks. We all have laundry detergent handy and it was really easy to do. If you have an old toothbrush, use it to brush the gum away and it will quickly dissolve. I'm so happy that I found this method, and I hope it helps you too.