Whirlpool ice makers typically come with a built-in cleaning-status light to let owners know it should be cleaned soon, as of 2015. Whirlpool and other manufacturers sell an ice-maker cleaning solution that can be used, as many household chemicals are discouraged due to potential harm.
The ice maker should be shut off for 30 minutes to an hour to allow all of the ice to fall into the storage bin before cleaning. Ice makers typically have a cleaning cycle that should run using the cleaning solution. The ice maker should not be turned back on until all of the cleaning solution is dissolved completely.