Avoid using a heavy-duty plumber's snake on an ice clog. The ice is brittle, but the frozen pipe is also under stress; mechanical force can cause the pipe to shatter. How to Prevent Future Freezing

Pour about half a cup of rock salt or table salt down the drain. Follow it with boiling water.

During a cold snap, keep the bathroom door open to allow warm air to circulate.

Let it sit for 15 minutes to allow the chemical reaction to work. 3. Targeted Heat Application

: Use a hairdryer to blow hot air directly into the drain or onto the exposed pipe if you have an access panel.