Water was backing up in my kitchen sink. I did everything I could think of: vinegar and baking soda, using an allen wrench to loosen up anything in the garage disposal, removing the pipes and checking for clogs. Nothing worked. I found MMP through Next Door reviews, and they came out the same day I called! After sending a camera down, they discovered there is a dip in the pipe under my foundation, and over many years, that got clogged up. Unfortunately there is no fixing that, but he did manage to get it unclogged! I just have to be diligent about not using my garbage disposal as much. The total was $300.