Next, you will need a container in which to place the tablet or detergent. In the bowl, to pour directly over the tablet, you will put hot water so that the content dissolves well. Of course, the water should not be too hot, otherwise you could puncture the bag. If the tablet has 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. Therefore, we are going to create a very powerful combination that will be able to eliminate even the most stubborn fat. The liquid must be poured into the bag. You have to make sure it is not too thick and that the bag does not get punctured.

At this point, the bag should be tightly closed so that the liquid does not accidentally leak out. Next, place the bag with the rack inside on a flat surface. The oven rack, in the bag, will have to rest for about two hours. If it is very dirty, lengthen the time, for example, let it sit overnight.
When the necessary time has passed, remove the oven rack from the bag and rinse it under running water. No scrubbing will be necessary. It will be like new and ready to be used again.