TSP can be found at your local hardware or home improvement store.
You can make your own oxygen cleaner by combining 1 part sodium percarbonate (dry, powdered hydrogen peroxide) and 1 part sodium carbonate (washing soda or soda ash). [11] X Research source Take care not to confuse either of those powders with sodium bicarbonate (baking soda).
Add a few more tablespoons of oxygen-based cleaner on top of the aluminum foil. [13] X Research source
