Just to throw another (and CHEAPER) option out there: If this is sticky adhesive type goo of any kind, find an aerosol can of any (did I say any? YES I DID!) common household product such as hair spray, deodorant, lysol, etc (unless it's a cooking product, stay away from those, they usually have some oil-based product in them that negates their usefulness). Spray it on the stuff and wipe with a clean towel/rag/sock/shirt/fabric.
I've used all three of the above mentioned things with no problems whatsoever, and it has WORKED each and every time. You can stop your worrying if you can't find Goof-Off at your local neighborhood store. If the method I'm advocating doesn't work, THEN go waste your hard earned dough on a "specialized" product.
If Lysol will remove three month old Duct tape residue from a fender without ruining anything, it will work for your purposes too.