Mildew resistant. Tough/flexible, resists shrinking. Safe, non-toxic, no harmful fumes: as defined in the Federal Hazardous Substances Act. Elmer's Acrylic Latex Tub & Tile Caulk is a durable latex caulk ideal for sealing gaps around tubs and tile. Water resistant, easy clean-up, non-toxic, low odor, resists discoloration, will not crumble, paintable. Note: Elmer's Tub & Tile Caulk can also be used to cement loose wall tile to clean, dry, sound surfaces before regrouting.