When we bought our house, the inspector warned us that we may have small issues because of the way our dishwasher and disposal are connected. Rather than paying big bucks for a professional to come fix our situation, we decided to try this freshener. It most definitely works - as long as you use your dishwasher regularly. For instance, I was sick and my mother came to help. She did a load of dishes but no one opened the dishwasher for a couple days. The freshener smell was overwhelming and I feel some of it got into my plastic ware and cups - I still "taste" the freshener smell even after several washes.