Put Bacteria to Work
Whether it's hair, grease or food, some sort of organic matter causes most drain clogs. Fortunately, there's a type of bacteria that breaks down organic matter in your drains. Add the bacteria to your drains and it will consume organic matter which helps prevent clogs. You can buy drain-cleaning bacteria in granular or liquid form.
Bacterial drain cleaner is noncorrosive so it won't harm pipes, and the bacteria won't interfere with the bacteria in your septic system. Follow the instructions on the package. Add the bacteria when drains won't be used, like right before everybody goes to bed, to allow it time to work. Drain and trap cleaner is available at home centers and hardware stores. A package should last several months, depending on how many drains you treat. Tough clog? Don't give up!