Rid-X, 3 Count, 3.2 OZ, Dual Action Septic Pac's, Easy To Use Dissolvable Pouches That Contain A Powerful Concentrated Dual Action Formula With Advanced Enzymes That Start Working Immediately To Break Down Household Waste Such As Detergents, Soaps, Grease & Paper & Patented Natural Bacteria, Continuously To Help Reduce Tank Build Up & Prevent Septic Backups, Use Regularly Will Help Keep The Bacteria Population Consistently High Throughout The Year, Monthly Doses For Tanks Between 700 & 1500 Gallons.