Also they need to be cleaned. Not all dishwashers are created equal. Some leave gunk behind on the bottom. It could be drainage and or poor design. Some hav

Also they need to be cleaned. Not all dishwashers are created equal. Some leave gunk behind on the bottom. It could be drainage and or poor design. Some have a built in garbage disposal and you have to clean the bin out every once and awhile. If you have never done it. It is not a fun task.