This nickel-safe, unscented ice machine cleaner measures 16 fluid ounces and is used to remove mineral build-up and hard water and is compatible with several makes and models of freestanding ice machines. To use properly, turn off your ice machine and remove the existing ice left in your ice machine. Next, drain the water from your ice machine. Empty the entirety of this cleaner into the empty water pan and activate the cleaning cycle, and once the cycle is complete and you drain the pan again, the cleaning is complete!