<human>: I've heard that there are some things you should never put in your septic tank. Can you tell me about those?
<bot>: Sure! There are certain items that can clog up your septic tank and cause it to overflow, which is a very serious problem. Here are the most common ones: grease, fats, oils, hair, cotton swabs, diapers, sanitary napkins, tampons, condoms, and plastic bags.