It is common for households (not all countries) to have a garbage disposal as part of their plumbing system. Garbage disposal plays a big role before everything goes down the drain and sewer. A garbage disposal may need replacement over time, which a plumber can install for you. There is no exact time frame as to when your garbage disposal must be replaced. However, you can expand the life span of your garbage disposal by choosing what to put inside it. Not all wastes are broken down, which causes clogs and leaks. Here are the things you should NEVER put in your garbage disposal: Paper, Plastic, Glass, Metal Although it is unlikely for these things to get to your disposal, there are still instances that allow it to be there. Some smokers dispose of there cigarette butts in the garbage disposal. Also, some fruit stickers found in fruit peels are some times disposed of in the disposal. If you happen to break a glass while washing it, do not throw it in your garbage disposal. These m...