When you see stagnant water in the shower or an overflowing sink, you may be tempted to buy a liquid drain cleaner from the local home improvement store. While this is a quick DIY solution, not all products are safe for your plumbing. Liquid drain cleaners comprise toxic chemicals that corrode the inner lining of your pipes, increasing the risk of leaks and pipe bursts. You can prevent such risks by hiring a drain cleaning company for regular maintenance.