Dry-Treat's impregnating sealers are technologically different from commonly available silicone, teflon and siloxane impregnators. Our specially engineered molecules penetrate deeper into porous materials and bond permanently inside the pores,without blocking them. This creates a deep barrier of protection within the tiles, paving, natural stone etc, which not only protects against staining, but against other serious damage, such as salt efflorescence. Dry-Treat impregnating sealers stand up to cleaning chemicals, traffic, sunlight, and even commercial cleaning techniques such as high pressure hosing. We back our technology with written performance warranties of up to 20 years, when the sealers are applied by a Dry-Treat Accredited Applicator