Yes. The dishwasher will last longer and have less plumping problems if you rinse first even if the manual says that you don't have to. Even if the dishes come out clean, all that left over food has to go somewhere. And that's in the pipes along with the water. We run ours twice a day, sometimes once, sometimes 3x. But then we are a multigenerational family of 4 adults, an 11 yo, and 3 kids under 5 (ok, so the baby doesn't use any dishes
. And then there are the other family members that don't live here but show up frequently.