Several factors can harm the bacteria in your septic system, including:

  • Excessive detergents, laundry waste, bleach, household chemicals, and caustic drain openers.
  • Garbage disposal grinds that increase solids accumulation.
  • Disposal of non-biodegradable items like plastic.
  • Excessive grease and fats disposal.
  • Disposal of items like cigarette butts and sanitary napkins, which are biodegradable but not readily decomposable.
  • Overuse of a smaller or failing septic system due to high occupancy.