CLR's Powerful cleaning action; works instantly. The powerful, patented formula takes on tough calcium, lime deposits, scale and rust stains and is safe for various applications. Has unique formulation that cleans multiple items and surfaces including tubs, toilets, sinks, glass, fiberglass, stainless steel, stucco, brick, cement, HVAC, dehumidifiers, humidifiers, swamp coolers, porcelain and more. Many industrial and commercial uses in healthcare, manufacturing, automotive, energy, government and hospitality areas.

• Safe on all septic tanks and plumbing including copper, plastic PVC, etc
• Non-toxic; no hazardous solvents or harmful chemicals
• EPA's DfE and USDA's Certified Biobased
• Registered Kosher by Orthodox Union
• Contains Lactic acid (industrial grade 15-20%), derived from a natural plant source
• CLR’s unique formulation has multiple uses