Spray Nine’s Tub ‘n Tile powers off tough hard water deposits and light surface rust and dissolves heavy soap scum buildup with a blast of cleaning power. Tub ‘n Tile’s professional-strength formula leaves bathroom surfaces sparkling clean, including porcelain, fiberglass, ceramic, synthetic marble, plastic, baked enamel, stainless steel, formica and no-wax floors. The biodegradable formula is user-friendly with a fresh lemon fragrance. Tub ‘n Tile is readily biodegradable according to oecd 301-c Modified miti Test