If the ice blockage does not clear, the caustic chemicals will sit in your frozen pipes, eating through plastic PVC or corroding metal joints.
Leave a very slow trickle of water running from faucets connected to exposed pipes during extreme cold snaps. Moving water rarely freezes. does drano work on frozen pipes
We get this question a lot during cold snaps: "Will Drano melt the ice in my pipes?" If the ice blockage does not clear, the