Product review (2 stars): Good idea, poor design.
After a great deal of fiddling, I could only get the large clips to work, the small clips did not snap onto my dish-washing wire racks. Trying to get them to fit damaged the plastic coating on my racks and one of the smaller clips snapped at the base and cut my thumb as I was trying to get one to snap into place. I have to accept that these aren't designed to fit all dish washing racks.