LET'S COMMENCE WITH THE OBSERVATION THAT HAVING YOUR SEPTIC SYSTEM INSPECTED EVERY 5 YEARS OR SO BY AN EXPERIENCED PROFESSIONAL IS REAL CHEAP INSURANCE.  THAT STIPULATED, WE CONTINUE ON. 

1. DISHWASHER / CLOTHES WASHER DETERGENTS CAN KILL BACTERIA THAT PROMOTE DECOMPOSITION OF SOLID WASTES. INTRODUCTION OF BREWER’S YEAST IS GOOD PREVENTIVE MAINTENANCE. YOU CAN DO THIS BY PUTTING A COUPLE OF TABLE SPOONS IN THE COMMODE NOW AND AGAIN OR DRINKING IT WITH ORANGE JUICE EVERY MORNING. LATTER WILL HELP YOU STAY FRESH AND HEALTHY ALONG WITH YOUR SEPTIC SYSTEM.
2. DRAIN FIELDS CAN GET PLUGGED WITH POLYESTER, NYLON, AND OTHER NON- BIODEGRADABLE FIBERS THAT ENTER SEPTIC SYSTEM WITH LAUNDRY WATER. FILTERS ARE SOLD TO PREVENT THIS PROBLEM LIKE "SEPTIC PROTECTOR". SEPTIC PROTECTOR - 1-800-242-6737.  NOTE: MOST SEPTIC FIELD CLEARING PRODUCTS ARE MORE HYPE THAN HELP. IF YOU DON’T CARE FOR / MAINTAIN YOUR SEPTIC SYSTEM, YOU’RE GOING TO HAVE PROBLEMS.
3. YOUR SINK & DISPOSAL INTRODUCE OILS, FATS, GREASE & SOLIDS INTO THE SEPTIC TANK THAT WILL RESULT IN THE SYSTEM HAVING TO BE PUMPED OUT MORE OFTEN THAN NEED BE.  GREASY CACA IS THE ENEMY OF YOUR SEPTIC SYSTEM!!!  GREASY CACA GETS IN YOUR SEPTIC SYSTEM BY WAY OF YOUR KITCHEN SINK.  LITTLE ANIMALS LIKE GREASE SO ONE OPTION IS TO PUT IT OUTSIDE WHERE CRITTERS CAN ENJOY IT AND BENEFIT BY YOU SPARING YOUR SEPTIC SYSTEM INJURY.  WHAT A DEAL.