When I was growing up, these seemed to be ubiquitous and I never liked them. They seemed overcomplicated for the purpose, and created a gross and smelly area under the sink that needed more cleaning.
I haven’t had one in years, as a simple sink mesh does the same job. But I don’t really know how other people are. Are under sink garbage disposals still common, and commonly actually used by people here?
They’re not legal where I live. Something about our sewage lines or treatment center not being able to handle it if I recall correctly. I have a clog resistant drain strainer that I clean out every time I rinse dishes in the sink instead.