Many people just worry about cleaning their toilet, sink, and drains but tend to forget about cleaning where the waste goes. The septic tank is where your waste is stored and broken down, but with all the antibacterial cleaners you use, there isn't much bacteria left in the septic tank to eat away at the waste. You should still use whatever cleaner you prefer on your toilet, sink, and drains, but you need to add bacteria to your septic tank occasionally to get rid of the smell.
Buy the septic enzyme solution of your choice. All the septic solutions provide minimally four enzymes that break down waste; they include cellulase, lipase, protease and amylase.
Read the directions completely on the product you buy. Open the product.
Pour the suggested amount into only one toilet bowl in your home. It is usually a powder or liquid and up to 28 ounces. Flush the solution. The product will begin to work within two hours.
Repeat this once a month, every month to maintain waste in your septic tank.