DAP Touch ‘N Seal Professional Landscaping foam is a one-component black polyurethane adhesive and sealant that is recommended for exterior applications due to being formulated with UV inhibitors to retain its color and blend in naturally to the landscape, even when exposed to direct sunlight. It is plant and fish-safe, and the dark color allows the product to blend into the shadows. Note: A PRO foam applicator is required to use this product.