Put ALL of the wastewaters from the home into the septic tank. This includes all flushing toilets, sinks, bath, shower, washing machine, and dishwasher wastewaters.
NEVER use your septic tank system as a trash can. Be especially sure to avoid putting excessive amounts of grease into the system. Do not use caustic drain openers for a clogged drain. Instead use boiling water or a drain snake to free up clogs.
DON’T flush anything except toilet paper into your septic system. This includes flushable wipes, cigarette butts, diapers, sanitary napkins, tampons, condoms, unwanted medication, oven cleaners, degreasers, or any hazardous chemicals into your system that will kill the natural digestion process.
Be WATER WISE. Using too much water is a frequent factor in failed systems. Spread laundry washing throughout the week, and wash full loads. Quickly repair all leaky faucets and toilets.