Failure to clean the septic tank when needed allows solids and scum to pass into the disposal field or seepage pit. The seepage area can then become clogged and force sewage to the surface of the ground or back into the house. This creates a hazard to the health of your family and neighbors. Also, when your septic system fails, sinks and toilets will not drain. Correction may be expensive.
Some corrections require continuing expenditures of money.
If such products had value, the Health Department would be the first to suggest their use. The natural bacteria in the tank provide the most efficient cleaning method. On the other hand, the amounts of bleaches, cleaners, and drain cleaning chemical generally used are so small in relation to the septic tank capacity that they do not interfere with the operation of the system. When the tank is cleaned, a small amount of sludge should be left in it. This provides bacteria for the decomposition process.