The bacteria found in GreenPig have been specifically chosen to break down septic tank waste. A colony of bacteria already exist in your septic system, GreenPig is adding more bacteria to break down waste to help avoid problems such as clogged leach fields, pooling of water in the yard, and obnoxious odors. GreenPig is a concentrate. As a company, we never felt the need to add "fillers" to make our package look bigger to make the consumer feel like they are getting more bacteria. GreenPig is simple to use. Just drop the solupak in the toilet and flush. Repeat once every 3 months. There is no need to pour boxes of messy powder or measure bottles of liquid. GreenPig is simple, clean, and efficient by providing the right amount every time. Why should you go to the store every month to buy a box of powder when GreenPig is a full year supply. Add up how much you spend every month on septic treatment then compare that to GreenPig.