How to Deep Clean Greasy Kitchen Tile Grout

Grout is the ultimate trap for kitchen grease, acting like a magnet for airborne cooking fats that settle and harden into a sticky, dark film. While basic floor cleaners might slide right over the top of the grime, they rarely touch the deeper layers embedded within the porous cement lines. Getting your grout back to its original color requires a combination of degreasing power and mechanical abrasion. Done well, this process doesn't just surface-clean; it draws the oil out of the grout pores, leaving the lines clean and refreshed. You aren't just wiping away dirt, you are resetting the finish of your floor or backsplash. Once the grease is gone, you'll find that daily cleaning becomes significantly easier and more effective.

1. Clear the Stage First. Remove all furniture or items from the floor or counters. Use a stiff-bristle broom to sweep away loose debris and dust that would otherwise turn into mud during the cleaning process.
2. Build Your Weapon. Combine three parts baking soda with one part hydrogen peroxide in a small plastic bowl. Stir until it reaches the consistency of thick toothpaste.
3. Coat Every Line. Use a gloved finger or an old spoon to spread the paste directly into the grout lines. Ensure the paste sits thick enough to cover the discoloration entirely.
4. Let Chemistry Work. Allow the paste to sit on the grout for 15 to 20 minutes. This dwell time allows the peroxide to break the chemical bond between the grease and the grout material.
5. Scrub It Out. Use a stiff nylon-bristle grout brush to scrub the paste into the grout using a circular motion. Apply moderate pressure to lift the grease trapped in the texture.
6. Leave No Trace. Wipe away the residue using a clean, damp microfiber cloth. Follow up with a final pass using fresh water to ensure no baking soda film remains.