You need tank treatment that won't wreck the septic system at your campsite or home. The blue formula does the job, but if you're dumping into a septic line or a sensitive drain field, you want something with biological action. These green sachets give you the same pre-measured convenience — one drop, done — and the formula breaks waste down biologically so it's gentle on septic tanks. Odour control is still there. Waste liquefaction is still there. You just get a cleaner, more environmentally considerate breakdown of what's in that tank. Twelve sachets per pack. Toss one in after each use, close the lid, move on with your day. Add to cart