ProCaulk is the only hassle-free way to apply silicone with no mess and a perfect finish every time or Your Money Back  Pro Caulk is the only hassle-free way to apply silicone with no mess and a perfect finish every time or Your Money Back. Designed to apply and seal caulk, acrylic, silicone, and other compounds, ProCaulk is quick and easy to use, saving you time, money, and effort.