Wow... I'm surprised that people use (or are told to use) dishwasher detergent. I thought it said in the manual (and I'm too tired to go check) just to use the dishwasher with no detergent. I rinse mine with the hose every 2 weeks or so and have used the dishwasher twice so far. When I changed the water I used spray on cleaner, rinsed them, then put them in the dishwasher. The dishwasher was very sudsy, so I rinsed again, then dishwasher, then put them back on. All is good.