The most permanent solution is insulation.
Do not use commercial drain cleaners (like Drano) intended for hair or grease clogs. These chemicals generate heat through chemical reactions that can become trapped near the freeze, potentially melting plastic pipes. how to unfreeze bathtub drain
One of the simplest and most effective methods to unfreeze a bathtub drain is by pouring hot water down the drain. Here's how: The most permanent solution is insulation
: The pipe or surrounding floor feels unusually frigid compared to other areas. how to unfreeze bathtub drain