hi,, i know they say NOT to do that because of bacteria in the water ,,but i do just that when after i use cleaning solution ,,i just rinse with water really well and put in the case with the disinfection solution and have not had a problem even at work if i get something in my eye and with rpg's U KNOW when u have something there LOL i just pop it out rinse with a little bit of water (i use the rewetting drop first though to see if that gets it out) and just pop back in and im good to go