Better Life's tub, tile, and grout cleaner dissolves soap scum, rust, and hard water stains without fumes or funny fragrances. Celebrate your sparkling bathroom and shower by splashing, shampooing, and singing freely. Spray it on tile, grout, fixtures, sinks, toilet seats, and tubs, or on your shower's walls, doors, and curtains. Directions. Spray the surface, scrub, and rinse clean. Safe for use on ceramic, porcelain, stainless steel, fiberglass, acrylic, and chrome surfaces. Do not use on brass, wood, marble, or granite. Always test on an inconspicuous area first.