Cleaning guides
How to Deep-Clean Bathroom Grout in 15 Minutes
Tired of grout that looks gray no matter how hard you scrub? This is the same method our team uses to restore years of stained, mildewed grout — using a SpinScrubi electric spin scrubber, a simple baking-soda paste, and zero harsh chemicals.
What you'll need
- SpinScrubi Electric Spin Scrubber with the grout brush head
- Baking soda
- White vinegar in a spray bottle
- Warm water
- Microfiber cloth
The 5-step method
Rinse and loosen
Spray warm water across the grout lines to soften surface dirt. Skip the bleach — it eats sealer and can damage colored grout.
Apply the baking-soda paste
Mix three parts baking soda with one part water until it forms a thick paste. Spread it directly into the grout lines with your fingers or an old toothbrush.
Activate with vinegar
Lightly mist the paste with white vinegar. You'll see it bubble — that's the reaction lifting mildew and embedded soap scum out of the porous grout.
Scrub with SpinScrubi
Attach the narrow grout brush head, set the SpinScrubi to high speed (300 RPM), and run it slowly along each grout line. Let the motor do the work — no pressing required. The IPX7 waterproof housing means you can use it directly in the shower.
Rinse and dry
Rinse with warm water, then buff with a microfiber cloth. For best long-term results, reseal the grout every 12 months.
Why a spin scrubber beats hand scrubbing
Hand scrubbing applies inconsistent pressure and burns out your wrists after 10 minutes. A 300 RPM spin scrubber delivers thousands of brush passes per minute at perfectly even pressure — which is why the same grout line that takes 45 minutes by hand takes under 4 minutes with SpinScrubi.
Get the SpinScrubi — 47% off today