OVEN & GRILL CLEANER This higher viscosity product is designed to cling to vertical surfaces and degrease commercial kitchens. This product will remove carbon stain, grease, oil, tar, and burnt deposits from most kitchen surfaces. This product has been found to be very effective in removing stains in Chinese restaurants. It is the most effective in hot water and rinses free at any temperature. Dilution rate is 1:100 in hot water pressure washers. Contains Potassium Hydroxide. This item has an added hazmat fee when shipping FedEx ground.