 He snaked it, which made it better. It drained. I put some boiling water down it and then filled up the two-sided sink with the disposal on one side, sink on the other. I filled them both up with really hot tap water about four or five times and just ran hot water down it. I tried vinegar and baking soda, and it's draining right now, but it's not draining perfectly. And whenever I turn on the disposal, it backs up.