Common household remedies request
I've got a hissing noise coming from the drains in one of the sinks, downstairs. The noise was quite loud at 4AM; I thought somebody was doing a wash. It's still present now, but quieter. Not from any of the other sinks. There's definitely no odor. There's no water on the basement floor. There's no trickling noise in the basement. I'm baffled! Any thoughts?
The town says it's cleaning pipes. Could that possibly be doing something?