After removing your grease filters, soak them in warm water using a mild detergent solution. Soak for 15-20 minutes per side for best results.
Some filters may be dishwasher safe, consult your owner's manual for confirmation.
NOTE: When cleaning all metal filters in a dishwasher, use a non-phosphate type detergent. Discoloration of the filters may occur if using phosphate detergents or as a result of local water conditions, but this will not affect filter performance.