How to Clean Kitchen Backsplash Grout in a Small Kitchen

To clean kitchen backsplash grout, mix baking soda with a little water into a paste, spread it along the grout lines, and let it sit 10 minutes. Scrub each line with a stiff nylon brush or an old toothbrush, wipe with a damp cloth, and dry. For greasy stains, add a few drops of dish soap to the paste first.

What you'll need

Baking soda
Dish soap (a grease-cutting one works best)
A stiff nylon brush or an old toothbrush
Two microfiber cloths (one damp, one dry)
A small bowl for mixing the paste
A spray bottle of warm water
Rubber gloves
Optional: a grout pen for lines that stay stained after cleaning

Step by step

Clear the counter under the backsplash and lay down a towel to catch drips. In a small apartment, the sink and stove are usually inches away, so protect them too.
Mist the grout lines with warm water. Loosening the grease first means less scrubbing later.
In the bowl, stir baking soda with just enough water to make a thick paste. Add a few drops of dish soap if the grout near the stove is greasy.
Spread the paste along the grout lines with the brush or your gloved finger. Work in a small section at a time so it doesn't dry out.
Let it sit about 10 minutes.
Scrub each grout line, following the line rather than circling. A toothbrush fits the thin lines around a tight backsplash better than a big brush.
Wipe the paste away with the damp cloth, rinsing it often. Then buff dry with the second cloth so water doesn't sit in the lines.
Open a window or run the range hood while you work. Many NYC kitchens have one small or non-opening window, so move the air however you can.

What NOT to do

Don't use a wire brush or metal scraper. It gouges grout and scratches glazed tile permanently.
Don't mix bleach with anything else. Combining cleaners can release dangerous fumes, which is worse in a cramped kitchen with poor airflow.
Skip acidic cleaners on natural stone. If your backsplash is marble or another stone, vinegar and lemon will etch it. Test in a hidden corner if you're unsure of the material.
Don't soak the wall. Grout is porous, and water trapped behind tile near a steam radiator or a leaky old wall can loosen tiles over time.
Don't scrub unsealed grout hard while wet before it has fully dried between cleanings, which can wear it down faster.

When to call a pro

DIY handles everyday grease and grime. But if grout is crumbling, missing chunks, or so darkened that scrubbing barely helps, that's a repair or regrout job, not a cleaning one, and forcing it can crack tile. Deep discoloration behind a stove often needs stronger equipment and time you may not have on a work night in a small apartment. If you'd rather hand off the whole kitchen, book apartment cleaning with CleanWhale and let someone else handle the tight corners.

FAQ

How often should I clean backsplash grout?

A quick wipe of the grout near the stove every couple of weeks keeps grease from building up. A full paste-and-scrub every month or two is usually enough for a home kitchen.

Why does my grout turn dark near the stove?

Cooking grease drifts up and settles into the porous grout, then traps dust and food particles. That's why the lines right behind the burners darken faster than the rest of the backsplash.

Can I use a steam cleaner on grout?

A handheld steam cleaner can loosen grime, but keep it moving and don't linger on one spot, especially on older grout or natural stone. Check that your tile and grout can handle heat before you start.

What if the grout is still stained after cleaning?

If it's clean but permanently discolored, a grout pen or a fresh coat of grout sealer can even out the color. That's cosmetic, not dirt, so no amount of scrubbing will change it.

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