A baffle in a septic tank can become clogged due to various factors. One common cause is the presence of large amounts of toilet paper, especially if excessive quantities are flushed at once. Additionally, non-biodegradable household waste, such as so-called flushable wipes, sanitary pads, tampons, cotton swabs, and condoms, can accumulate and obstruct the baffle. These items do not break down easily, leading to blockages. It is crucial to dispose of such waste properly, as clogged baffles can impede the flow of wastewater, potentially causing backups, system failures, and expensive repairs.