I was in the same boat with some auto window tint stuck to a window. Tryed every thing that mixes with, cleans up, or takes off paint and wood finishes, furniture strippers, different adhesive removers such as goof-off, ammonia, bleach, solvents, wd-40, engine cleaners, carb cleaner, you name it. Nothing worked out of my expensive and now extensive collection of probably every substance that is probably banned by the epa. The closest was either naptha or mineral spirits and maybe it just needed the seran wrap and heat. Finally found out the secret from a detail shop which may help you.
Spray some "simple green" degreaser(found at walmart in auto dept) on the adhesive, cover with seran wrap to keep the degreaser from evaporating, and then put a heat lamp (or maybe a blow dryer) on it for an hour or two. It may take a couple applications to get it all and may take a while to do the whole floor. With the auto glass, once the tint and most adhesive was removed, spraying ammonia on the glass cleaned off the final residue. Buy a spray bottle of pure ammonia at walmart to see how that does. Be careful of the fumes. Good luck and post back to let us know if it works.