There is no known substance capable of eliminating or reducing the build-up of sludge and scum that makes periodic cleaning necessary. Do not put chemicals in your septic system for treatment or maintenance. Motor oil from your car or truck should be recycled by taking it to your nearest recycling center or a service station. Motor oil should not be disposed of in a septic system. Inert or non-biodegradable materials also should not be disposed of through your septic system.
Examples are cat box litter, disposable diapers, coffee grounds, sanitary napkins and paper towels.
These items quickly fill your septic tank, decrease its efficiency and will require more frequent pumping of your tank. Large quantities of cooking grease, oil and fats should not be allowed into septic systems. These can contribute to blockage within the system. The use of garbage disposal units should be avoided, as these increase the amount of solids in the septic system, requiring more frequent pumping. The performance of your septic system will be improved if you cut down on water use so that a smaller volume of wastewater passes through the system.