Hi Mariah,
Paracetamol - I don't know what it is called in the US... but google will help. Plug the iron in and let it heat up then rub the paracetamol on the sticky area. The paracetamol will bubble and melt and melt off the sticky stage. I couldn't believe it when I was first told this, but when I tried it, it worked!
Hugs
Caroline