Mix Baking Soda & Soap. In a bowl, stir together the baking soda and castile soap until it forms a paste.

Add Hydrogen Peroxide. Slowly add the hydrogen peroxide while stirring. If the paste is too thick, add a bit more peroxide or a small amount of water.

Optional Essential Oil. Add a few drops of lemon (or other preferred) essential oil for a fresh scent.

Use Immediately or Store. For best results, use right away. You can store any leftover scrub in an airtight container for a few weeks (though it may dry out a bit).

Apply Paste. Spread onto the grimy surface—oven door, stovetop, sink, etc.

Let It Sit. Allow the paste to sit for 5–10 minutes for tough stains.

Scrub & Rinse. Use a non-abrasive scrubbing pad or cloth to work away the grime.. Rinse with warm water or wipe clean with a damp cloth.