What should not be flushed down a septic system?

Feminine hygiene products should not be flushed down a septic system because they do not break down easily and can lead to clogs and blockages in the system. These products are often made from materials that can absorb water and swell, creating larger masses that can obstruct pipes and cause backups. When such blockages occur, they can adversely affect the entire septic system, leading to costly repairs and potentially impacting the environment through untreated waste.

In contrast, biodegradable products, human waste, and toilet paper are generally considered safe for septic systems, as they are designed to break down and decompose naturally without harming the system's functioning. Keeping these items out of a septic system helps ensure its longevity and proper operation.