At the time, the Mobro 4000 incident was widely cited by environmentalists and the media as emblematic of the solid-waste disposal crisis in the United States due to a shortage of landfill space: almost 3,000 municipal landfills had closed between 1982 and 1987. It triggered much national public discussion about waste disposal, and may have been a factor in increased recycling rates in the late 1980s and after. It was this that caused it to be included in an episode of Penn & Teller: Bullshit! (season 2, episode 5) in which they debunk many recycling myths.
Because it’s out of sight, it can be easy for some homeowners to forget they even have a garbage disposal — especially if it was installed by a previous owner. However, an unused unit can rust and seize up, which can lead to leaks and mechanical problems. Make a habit of running your disposal for a minute or so every couple of weeks, even if you don’t actually grind anything.
Some folks knocked the instructions. Take heart. It appears that the Waste King guys have heard the criticisms from the negative reviewers. I am guessing that they have been re-written to better explain the installation because they are really easy to follow. My best advice is this: don't be afraid of a difficult or confounding set of installation instructions. It is really easy. Here's what you do. Go to youtube.com and search for a video on How To Remove Your Existing Garbage Disposal because this is the hardest part. You will find one that matches yours. Watch it. I started removing the Badger incorrectly, stopped, watched a video, and then it was a piece of cake. In my case, I shouldn't have removed the three long screws before removing the body of the old one. You do it after it is disconnected. READ the instruction manual carefully. Then go ahead and youtube the Waste King installation video. It is very easy once you see it done. No filing or grinding gaskets, and Good Lord, no car jacks under your sink please. If it is hard then you are doing something wrong. STOP!!! Review the procedure. Start again. The directions are actually very explicit. The parts are well labeled. The diagrams show you what to do. The videos show you what to do. If you prepare yourself (15 minutes of reading and watching videos, tops) you will fly though the installation and be a happy person.