Thank you Red! I will check in to that. I know there is a place that I clean particles out of in the back but maybe somthing is further down under the plastic grating? And I have to be honest with ya'll, this is the very first dishwasher I have ever had. I told a friend of mine in Panama that it was the next best thing since toilet paper...LOL...I hav3 6 children, 5 of them boys and they are eating machines. Even with the dishwasher they are sometimes a challenge to keep up with.