Here are 5 Myths about Drain Cleaning. You likely pay very little attention to the drains in your home until one becomes impacted by a clog. And the clog needs to be cleared. Over time, debris can build up in pipes. These form a clog that eventually slows your drain to the point where it drains slowly or not at all. Cleaning a drain is not terribly difficult, but there is a lot of misinformation out there regarding what works, what doesn’t, and what’s actually safe for your plumbing. Here are five drain cleaning myths.