Proper maintenance of your ICEMULE is key to ensure optimal performance. If you've only stored ice inside (i.e. no food or spilled beer or soda), simply pour the ice out and hang the ICEMULE upside down to dry. If you've had organic contents in the cooler, simply put a few drops of liquid soap (e.g. dishwashing soap) inside the cooler and then hose it out. Please be sure to properly close your AirValve when cleaning. We do not recommend turning the cooler inside out for cleaning or any other reason.