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.