May 15, 2023 · Give the catcher a clean with warm soapy water, rinse and then pat dry with paper towels or leave to air dry. 4. Clean the Charcoal Grate. If you have a kettle grill you will also have a charcoal grate that needs cleaning. Use the grill brush to give it a scrub, and then give it a quick wash in warm soapy water.