A combination of probiotic bacteria for use in large lakes or water ways. Should be inoculated for best results. Will degrade waste, beneficial for grasses if irrigation comes from lakes. Used properly, will help keep lakes clean and healthy for wildlife and fish. Ingredients: Natural Bacteria Nutrients. USES: Used in large lakes, fountains, ponds from 250,000 to 2.5 million plus gallons of water. BENEFITS: Lake Cleanse is one of the most concentrated lake products on the market.