Originally Posted by USAZorro
Steel wool takes old glue off pretty well. It needs to be sort of coarse. Be sure to wear heavy duty gloves, and clean up all the pieces of steel wool that come off.
Other options are bronze wool, stainless wool or a synthetic type pad. The maybe a bit more fdifficult to find & are more expensive. Their benefit is that the missed residue does not leave the rust spots that steel wool can. Bob