[PandG]

Thanks to everyone who replied to my original post about this issue. Since it's under warranty, the plumber came to check it out. He said this discoloration/ partial rust is normal on these "builder grade" InSinkErator Badger model disposals. Our disposal works fine, so we will continue to use it -- along with the various tips suggested -- until we need to replace it. At that time, we will go with a stainless steel model.

Gail