Unless you’re one of the lucky ones who just received a new gas grill for Dad’s Day, you need to get your old one up to speed. Remove the burners and clean them on the inside with a round wire brush.
Tape over the openings where the gas comes into the burners, then clean inside the grill with a shop vac. Wash the inside of the grill with soapy water and dry. Use a stiff brush for the baked on parts.