 solution, that will also kill the bacteria that's in there. And I think you'll find that if you can deal with that biogas, that it'll start smelling a lot better. So I have to actually scrub it? I can't just pour some bleach down there? No, you definitely need to scrub it. And that's why you probably want to take it apart from underneath the sink cabinet. It's probably going to have a trap, the U-shaped pipe. If it doesn't, by the way, that's the source of your problem, but I'm sure it does.