It is apparent that our toy hauler has seen it's fair share of the sun. A good portion of the caulking has dried out and hardened, while other sections have shrunk and pulled away from what it was in...
I just watched a you tube video on removing caulk and was surprised when they compared wd40 against a caulk remover and it worked just as good if not better. He just rubbed it on the caulk with a rag and worked it in and let it sit for a few minutes and he used a plastic scraper and it started to come off. It may work with the none silicon stuff. Might be worth a try.