We mounted our inside the sink-front tip-out panels. Out of sight, out of cruds way.

I haven't had any crud problems, and it's much more convenient than a wall switch or a switch under the counter. I like mine a lot.

Ditto vjrnts.

Ditto vjrnts & lsandler. Love it.

No crud here, either. Love it.

I also love it and am amazed that it stays clean. Sure beats the wall switch or under sink option! If I were building or remodeling again, it would be on the "must have" list.

If you do get crud, just take a toothbrush and soap to it. We do that with our faucet and it cleans up just fine.

We eliminated the air switch or any kind of external switch by getting a batch disposal, which has its switch built into the throat of the disposal, activated by turning the stopper. The stopper can also be positioned to plug the drain or to let water & small bits flow into the drain. A batch unit does not have the rubber flange that the continuous feed units have, so it's easy to see into it, & nicer & safer if you have to retrieve anything. We have 2 Insinkerator Evolution Cover Control disposals in our kitchen, and love them.