To clean an air fryer after cooking bacon, allow it to cool, remove the basket or tray and wash it with degreasing dish soap and warm soapy water. Scrub off any gunk with a soft-bristled brush and rinse well. Wipe down the bottom interior and exterior with a damp cloth or paper towel, then replace the basket or tray. If your air fryer is dishwasher-safe, place the removable parts upside down on the top rack.