No. 1 brand (Among dishwasher detergents based on sales). Safe for septic tanks. Phosphate free. Dishwashers save water (see back panel for water use details). Running the dishwasher daily saves water (Energy Star certified dishwasher use less than 4 gallons per cycle. Running the tap for 11 minutes while handwashing uses up to 24 gallons of water). 24 gallons with 11 minutes of handwashing vs. 4 gallons per 1 dishwasher cycle. Energy star.