FWIW, I've used acetone succesfuly, but generally find that it evaporates too quickly and the adhesive dries again before I can get it all scraped up. It takes several applications. Mineral spirits keep the adhesive gummy longer, and lighter fluid works even better. Follow it up with an orange-based product (such as goo-gone), which will also remove the remaining petroleum distillate, and you're good to go.

Regards,
Eric