... lavatory, wet place, kitchen, step stairs. toilet, massage bathtub, bathtub, stair, wet place, especially old people, kids, and workmanSurface comfortable and ... tub surface with non-abrasive scouring powder and warm water. For fiberglass, ABS and other plastic tubs, clean surface according ... tub treads at least one to three inches apart for better surface coverage.5.Remove backing from tub tread ...