Maintain the cleanliness of the oven
We all know how messy our kitchen could end after a cooking or baking session. In this case, you also want to leave the oven as clean as you left it before. When baking, some food may spill over or drip.
Ugh! Such a pain, but remember that the super useful aluminum foil will never leave you alone, it will be always present, in the dirtiest moments. Just placing the foil on the lower rack will prevent the oven from being too messy.