Then, in a well-ventilated area pour some ammonia into the trash bags. I did it in my garage but you can also do it outside.

You don’t need to cover the racks, just add about 1-2 cups of ammonia. The fumes from the ammonia are what actually does the cleaning of the oven racks.

*Note: I had a reader comment that you can also put a small bowl in the trash bag full of ammonia so it doesn’t leak and this has worked great.

Once you have the ammonia added to the trash bags then you will want to seal up the trash bags. You want to make sure that the ammonia fumes aren’t leaking out of the trash bag.

I just used some packing tape to seal them up so they were fairly air-tight.

Soaking The Oven Racks
Next, lay the oven racks down flat on the ground and let them soak for at least 2 hours.

The longer you let them sit the easier they are to scrub, however, I have heard stories of the finish coming off the oven racks when people let them sit overnight.

To be on the safe side I left them soaking in the ammonia for about 3 hours without any problems.

Cleaning The Oven Racks
After you let them sit for a couple of hours then you can open up the trash bags and carefully remove the oven racks.

Remember they will be wet and messy so I recommend doing it over a large trash can.

Then take the oven racks to a kitchen sink so you can wipe them down.

I recommend running hot water over them to help rinse away any ammonia cleaner still left on them.

Even though the grime and gunk were still attached to the oven racks after soaking it quickly came off when I wiped them down. I didn’t need to do a bunch of scrubbing to get them clean and shiny.