Septic tanks require regular maintenance to keep them working properly. Over time, sludge and scum can build up in the system, blocking drainage lines. Septic tanks use bacteria, or "activators," to break down solids and keep the system flowing smoothly. While commercial septic tank activators are available at most hardware and grocery stores, you can make an inexpensive alternative at home.
Combine yeast, corn meal and sugar in a bucket or large bowl.
Add lukewarm water and stir until all ingredients are completely dissolved.
Pour the homemade septic tank activator into the toilet nearest to your septic tank.
Flush the toilet twice to make sure all of the solution gets down into the tank.
Repeat the process every three to six months.