The interior of your oven needs to be cleaned regularly. Always keep burners free of dirt and debris. Clean the metal of your range hoods with sudsy water and do not use an abrasive pad or you will scratch the finish. Remember also to clean microwave oven removable glass shelves regularly because food residue keeps reheating and can cause shelf breakage. If your oven is self-cleaning use that system or have it checked by Dependable Refrigeration, LLC..