lukewarm water. How to clean and maintain Ice Cleaning and maintenance are vital for the longevity of your Fleshlight, and for your personal pleasure. Both in size and consistency. I like to do this while lying on my back in bed. Not a big deal, because if you thoroughly rinse it from both ends, itll all wash out. Just remember, its not discreet. Finish up by running some toy cleaner through there to kill any baddies that may be left behind. How to assemble it This is a piece of cake.