A cleanout is an opening in a drainage pipe that allows someone to clear the pipe of debris or to take a sample of the drainage for inspection. The main drain cleanout is the primary opening at the lowest point of your plumbing system where water and other waste flow out of your house. It's important to keep this opening cleared so that your drainage system works properly. If you're having trouble with your plumbing, it's best to call a professional to clear the clog and inspect your system. Remember, it's always better to be safe than sorry - especially when it comes to something as important as your home's plumbing!

A main drain is a large diameter pipe that collects wastewater from a number of different sources in a building or community. The main drain usually empties into a larger sewer line or septic tank. A main drain cleanout is a fitting near the bottom of the main drain that allows it to be cleared of blockages and debris.