- 1). Put the black oven racks into your bathtub. Plug the bathtub drain.
- 2). Fill the bathtub with hot water until the racks are fully immersed.
- 3). Add ½ cup white distilled vinegar to the water. This will help loosen the black, burnt food on the oven racks.
- 4). Add 1/3 cup liquid dishwashing detergent. This will help remove the black, burnt food as well as any grease buildup on the oven racks.
- 5). Mix the vinegar, dishwashing detergent and water until they are fully combined.
- 6). Let the oven racks soak for at least 2 hours, longer if the burnt-food buildup is extensive.
- 7). Unplug the bathtub drain and turn on the shower. Rinse the oven racks until all of the black coating is removed. You may need to gently scrub off some of the tougher spots with an old toothbrush.
- 8). Dry the oven racks thoroughly and put them back into your oven.
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