Brewer's yeast can be used in the toilet once a month, to keep your septic tank leach lines flowing. It keeps the bacteria active in your septic system. No need for harsh chemicals.
Maintaining Your Septic Tank
Can I Use Yeast in My Septic Tanks?
Unclogging a Drain or Toilet Attached to a...
Toilet Paper Advice for Septic Tanks
Sour Milk and Septic Systems?
Is Vinegar Harmful to Septic Tanks?
Identifying a Septic System Failure