I tested this on a baking tray that had seen three years of roasted vegetables—black, carbonized grease. I dissolved half a cup of Soda Crystals in a sink of hot water and left the tray to soak for 30 minutes. The grease literally slid off like melted butter. No scrubbing. No elbow grease. I am still in shock. For oven doors, a paste of Soda Crystals with a drop of washing-up liquid cut through polymerized oil that commercial oven cleaners failed on.
In small doses, baking soda acts as an antacid. Soda Crystals would cause chemical burns to the esophagus. Never confuse the two. soda crystals baking soda
If you have paint on a metal hinge or a paintbrush, a solution of hot water and soda crystals (1:10 ratio) will soften latex paint for easy removal. I tested this on a baking tray that