Bathtub drain smells sour. What will work?
The bathtub drain had been draining slowly and smelled sour. I removed the strainer, and pulled WADS of slimy hair out of the drain. The water drains smoothly now, so I think I got at least most of the hair. I’ve tried bleach, but the smell returned immediately after the shower stopped running. Also tried baking soda and vinegar. Smell stopped only as long as I ran water down the drain. 1) What could it be? 2) How to kill the smell for good?
