Happy Campers Organic RV Holding Tank Treatment — 64 Treatments

Granular holding tank treatment that eliminates black and gray tank odor without formaldehyde or chemical smell. One scoop (2 tablespoons) treats up to 40 gallons — sprinkle it with water down the toilet or sink; it is safe for septic systems and RV plumbing. It liquefies waste solids and most ordinary household tissue, works through extended dump intervals, and stays effective in extreme hot and cold temperatures.