How do you take the sticky stuff from tape off metal?
I use hand sanitizer to remove sticky tape residue from a surface. Place a dab of the hand sanitizer onto the sticky residue. Let stand about 5-8 minutes. To remove; scrub with a coarse cloth or if it is on a surface that can tolerate a scouring pad, use the scouring pad to remove it. This method has worked well. I learned this tip from working as an educational assistant and had to remove tags from the student's desk.
Soften with a hair dryer then rub with fingers.
Use "Goo Gone". It works great and a bottle will last forever! There are many other uses for it also.
Put rubbing alcohol on a cotton ball and rub over the residue. It will come off.