You will first need a very large bag, like those used to throw away garbage. The bag should be able to hold your oven rack.
Next, you will need a dishwasher detergent tablet. If you don’t have it, don’t worry, you won’t have to go out and buy it. All you have to do is replace the tablet with common laundry detergent.

Next, you will need a bowl in which to place the tablet or detergent. In the bowl, to pour directly onto the tablet, you will put hot water so that the contents can dissolve well. Of course, the water should not be too hot, otherwise you could puncture the bag. If the tablet is not completely dissolved, you can use a fork to speed up the process.

You will need to add 3 or 4 tablespoons of baking soda to the mixture. So we are going to create a very powerful combination that will be able to eliminate even the most stubborn fats. The liquid will need to be poured into the bag. You have to make sure that it is not too thick and that the bag does not get punctured.

At this point, the bag should be sealed tightly so that the liquid does not accidentally leak out. Next, place the bag with the rack inside on a flat surface. The oven grill, in the bag, will need to rest for about two hours. If it is very dirty, extend the time, for example, let it sit overnight.