There are a few things you can do to clean water shoes if they have been used in water. First, take them apart and dry them off. Second, put them in the dishwasher on high speed with the water running through them. Third, use a plunger to suction onto the top of each shoe and pull until all of the liquid is drained out. Fourth, put them back together and dry them off again. Finally, put them away in a cool place for future use.