Muscle is a heavy-duty, phosphate-free cleaner formulated for our customers in phosphate-banned areas and is one of the newer products developed in our Lab. If you're not in a phosphate-banned area, don't let that stop you from using it. This product packs some muscle, and is a multipurpose, economical product that cleans everything from dirty machinery to dirty windows. Environmentally-safe, Muscle contains no added fragrance, dye, or phosphorus. Dilution rates range from 1 to 1 for your heavy-duty cleaning needs, and up to 100 to 1 for cleaning windows; find the dilution that works for you and muscle some dirt away. Available in 1-gallon and 6-gallon containers in our online store, or contact us for a price quote for a 55-gallon drum.