Premeasured and pressed into a tablet, Mighty Mike U&F-BOOST! (Billion Onsite Organisms Sewage Treatment) tablets from Scienco/FAST - a division of Bio-Microbics Inc. are designed to break down sewage. They contain a formulation of 25 billion per gram Class 1 bacteria with no Salmonella, Shigella or E. coli strains. They are safe for pipes, septic systems, and tanks with no harmful chemicals, emulsifiers, added enzymes, or surfactants. The tablet can be flushed down the toilet or tossed directly into a trouble area. The maker states the microbial population will double in number every 20 to 40 minutes, consuming its food source until all organic material is gone. They can function in both aerobic and anaerobic environments. 866/652-4539; www.sciencofast.com.