If the ice blockage does not clear, the caustic chemicals will sit in your frozen pipes, eating through plastic PVC or corroding metal joints.
Drano needs standing water or direct contact with a clog to chemically break it down. It cannot dissolve solid ice. does drano work on frozen pipes
Here are some alternative methods to thaw frozen pipes: If the ice blockage does not clear, the
"Does Drano work on frozen pipes? Absolutely not. does drano work on frozen pipes