About this Item: No.1 Brand in septic system treatment (based on National Nielsen data) Helps prevent septic backups by continuously breaking down household waste (along with occasional pumping) Pre-measured, easy-to-use dissolvable pouches that are safe for use in pipes and tanks. Natural bacteria and advanced enzymes start working immediately to break down paper, protein, oils and grease. 1 Pouch of our powerful concentrated formula is 1 monthly dose for septic tanks between 700-1500 gallons. To use, just place a pouch in your toilet and flush.