As mentioned, a lot of things go down our drains and toilets. However, only some things should be flushed to ensure the efficiency of your plumbing is maintained. Some things that shouldn’t go down the drain include "flushable" wipes, feminine products, detergents and drain cleaning products, grease and oils, and other non-organic substances likely to build up in your pipes. Even if your drain is functioning, you must schedule a professional inspection with a drain cleaning company.