To help prevent clogs, fit all your tubs and shower drains with a strainer that catches hair and soap chips, and clean the strainer regularly. Do not rinse fats or cooking oils down the kitchen sink. Liquid fats solidify in the drain pipes and create clogs. Avoid using caustic liquid drain openers (like Draino or Liquid Plumber) on a drain that is completely clogged. The caustic ingredients are trapped in your pipes, and it can severely damage them. If you can't snake the drain yourself, contact a professional to do so. You can extend the life of your garbage disposal by: Using plenty of cold water when running it. Making sure you avoid overloading it. Don't dispose of things like bones, potato peelings, shrimp shells, rice, or corn husks. Never use a caustic drain opener. Once every three months, use 1/2 cup clean cooking oil to help lubricate the inside of the garbage disposal.