Unplug the power cord. Place the Excalibur trays in the top rack of your dishwasher and run them through a regular washing cycle.
After washing, remove the trays from the dishwasher and wipe with a soft cloth until dry.
Wipe the trays with a cloth dampened with water and a mild detergent, if you prefer to hand-wash your trays (the power cord should still be unplugged). Rinse well and dry with a soft cloth before placing back into the dehydrator.
Soak the mesh screens in warm water in the sink for a few minutes. Spray with water to rinse and remove any leftover residue.
Wipe the dehydrator door with a wet damp sponge or soft cloth to remove dirt and residue.