Although Drain Cleaning products are advertised on T.V. and you can find them at your local hardware store, we do not recommend them. They can crystalize in your lines and sometimes do more harm than good. If you do end up using them and they don't work, make sure you always inform us when you call in for a service call. We need to make sure our servicemen know that you have used Drain Cleaning products because it can cause damage to our equipment. Feel free to remind the serviceman when he arrives at your home.