Well there is that, sometimes the cleaner doesn't leave. I'm half joking, but I usually just rinse my coffee stuff w/ water, occasionally wipe the residue out of the filter holder w/ a paper towel. For cups, you don't see cream and sugar in mine hardly ever, so about every two weeks in the dishwasher, I'm not a purist. The pure addicts claim the coffee doesn't taste right when the cup is washed clean.