Using the DeWalt DCD2005 drain cable is a breeze. First, make sure the power is off if you're using a powered tool with it. Insert the cable gently into the drain opening until you feel resistance from the clog. Then, slowly turn the cable to break up the blockage and pull it out along with the debris. When you're done, clean the cable with a damp cloth to remove any dirt or grime. Keep it in a dry place to prevent rust. And remember, if you face any issues, you can take advantage of the 3-year limited warranty, 1-year free service contract, or 90-day money-back guarantee.