Adhesive romover

Used this "Duck" brand adhesive remover.
It had an applicator tip (sponge too) to easily apply it to adhesive left on surfaces.
It takes a minute to soften the adhesive but works very well.

Was trying it out to remove old labels for CM on a bunch of bins for her classroom.
It works but the easiest & best way to remove the old adhesive backed labels is to use a heat gun to get the label to a certain temperature at which the adhesive comes off very easily with the label.
I used an old school Master heat gun and it works fast.