MULTI-PURPOSE HOUSEHOLD MACHINE CLEANER cleans, deodorizes and optimizes performance of washing machines, garbage disposals and dishwashers. Use this treatment once a month to safely remove built-up mineral deposits and grime. Safe for high efficiency (HE) machines. Non-toxic, biodegradable and phosphate-free formula is made of 100% natural citric extracts. Won't harm septic systems. 3-pack set.