Septic Saver from BioStim is a multi-strain microbial additive designed to prevent foul odors, slow drains, seep-hole blockages and excessive septic tank pumping. Regular use can help keep the septic system free-flowing by digesting fats, oil, grease, soaps and other organic household waste to prolong the life of the entire system. It is safe for plumbing systems in homes, RVs, portable toilets and sewer lines. It contains no caustic or corrosive chemicals, free enzymes, emulsifiers or surfactants, and does not cause grease to pass through to the leachfield where it can resolidify and cause a septic field failure. It is applied by pouring into the toilet. 800/338-8812; www.biostim.com.