That's what they were called when they were first marketed in the late 60s. We had one once in Vermont. The fucking thing could chew up steak bones. I've barely seen any since then. I don't know if it's because they are against local building codes or people don't want them because they are going to cause sewer problems. If it's chewing up steak bones, it's chewing up fat too, and that will clog your pipes. Who the fuck even has these things?