Hello folks. I am looking for a caulk that can withstand the heat and moisture of a hot tub. The old caulk that holds the small tiles I have around the interior (for decoration purposes) is due to be replaced. The folks at Home Depot gave me a product that is not holding up at all. I need something for the inside that can withstand that type of eviroment. Thanks again and those of you that have helped me pick out the Nature2 system, a big thanks! We love the new system!