Hi, Julie. Klean Strip and Citristrip both make adhesive removers. The Klean Strip has methyl chloride and the Citristrip does not. You can check them out at www.kleanstrip.com and that links to the Citristrip site. They have an 800 number that you might be able to use to find sources in your area.
I have not used either, so be sure to let us all know how they work if you try them. I get concerned about methyl chloride as far as safety but other products usually take longer to work. Be sure to wear rubber gloves and eye protection, which ever you choose.