I use the dishwasher when sanitizing my bottles. However, first I dunk and shake the bottles around in a sanitizing solution in my bottling bucket, then I put them directly into the dishwasher. Of course don't use any dishwasher soap and run through a normal cycle. It is my belief that the dishwasher gets hot enough to sanitize and kill any unwanted bacteria. When I go to bottle I do it right over the door of the dishwasher, so that any beer that I happen to spill stays right in the door. When it comes time to clean up I just close the dishwasher and all spills dissappear into the dishwasher. I've done it this way since I started and I have yet to have any problems with unsanitized bottles ever.