Remove all racks and trays and clean them for ex. with a dishwasher. Switch off the incubator and let it cool down. Spray abundantly the interior of the incubator with Mycoplasma Off or wipe it off with Mycoplasma Off  Wipes. Let it air dry. Keep the door open for evaporation preferably overnight or for at least 1 hour. If your incubator is equipped with a heat inactivation procedure, start this procedure instead. Keep the racks and trays inside. Do not forget to remove the CO2 sensor if necessary. If your incubator is equipped with a copper inlay, do not polish the interior. Copper oxide is bacteriostatic. Polishing will remove this bacteriostatic coating. Reload the incubator. Use sterile aqua dest. for the pan and add WaterShield. For general operation, use plastic trays underneath your culture flasks to avoid spills during loading/unloading. Use culture flasks with vent filters and keep the caps tight instead of standard flasks with open caps.