TSP-PF 1 lb. Heavy Duty Phosphate Free Cleaner tackles tough dirt and grime on walls, woodwork, and floors. Its phosphate-free formula effectively removes greasy deposits, smoke, soot stains, and chalked paint. Use it to clean paint remover sludge, restore weathered decks and siding, and eliminate mildew and mildew stains when mixed with bleach. For heavy-duty cleaning, dissolve 1/2 cup powder in 2 gallons of warm water.