How to Clean a Toilet Brush | 6 Methods That Work

Every time you scrub a toilet, the brush picks up more than you want to think about. Tucking it back into its holder while still wet turns that holder into a bacteria nursery. The fix is a simple four-step cycle: disinfect, rinse, dry, store — done after each use. Here are the six methods that work, the common mistakes that undo them, and exactly how to keep both brush and holder clean enough to use without cringing.

Six Disinfecting Methods, From Fastest to Strongest

Pick based on what you already have under the sink.

• Bleach-water soak (strongest, slowest): Mix half a cup of bleach into one gallon of hot water (about 3.8 liters). Submerge the brush head and soak at least one hour; overnight is better. Rinse for at least 30 seconds after — bleach residue irritates skin.
• Disinfectant spray (fastest): Saturate the bristles with a spray cleaner, let it sit 10–15 minutes, then rinse with hot water. Good for a quick refresh between deeper soaks.
• White vinegar soak (easy, no harsh fumes): Submerge in straight white vinegar or a 50/50 vinegar-water mix. Soak anywhere from 10 minutes to overnight — vinegar is gentler so longer is fine.
• Hydrogen peroxide spray (simple): Spray 3% hydrogen peroxide until the bristles are dripping wet. Leave for 10 minutes, rinse with hot water. Works well and doesn’t smell.
• Baking soda plus vinegar (foaming action): Add one cup each of baking soda and vinegar to a bucket or the toilet bowl. Let it fizz and sit at least one hour. The bubbles help loosen debris between bristles.
• Hot soapy water (first step, not a finish): Fill the holder with hot soapy water, swish the brush around, and discard the water. This removes loose matter but doesn’t fully disinfect — always follow with one of the methods above.

Whichever method you pick, wear gloves and keep the bathroom ventilated with bleach or hydrogen peroxide. Never mix different cleaners unless the label says it’s safe.

How To Clean a Toilet Brush Step by Step

After each use, flush the toilet then rinse the brush under the flushing water or a faucet to knock off visible debris. Then follow this sequence:

1. Soak the brush head in the toilet bowl, a bucket, or the holder filled with your chosen disinfectant. Make sure the bristles are fully submerged.
2. Let it sit for the time your method requires — 10 minutes for peroxide or spray, at least one hour for bleach or baking soda.
3. Scrub between bristles with an old toothbrush if any debris remains after soaking.
4. Rinse thoroughly under hot water until no disinfectant residue is left. With bleach, keep the water running for at least 30 seconds.
5. Air-dry completely before putting it back. Wedge the handle between the toilet seat and the bowl so the brush hangs over the bowl and drips down into the toilet, not onto the floor.
6. Clean the holder while the brush dries — drain it, disinfect it with the same method, rinse, and dry it fully before the brush goes back in.

If you’d rather replace the whole routine with something that does the scrubbing for you, our roundup of the best electric toilet brush models covers the self-cleaning options that eliminate most of this work.

Four Mistakes That Undo Your Cleaning Work

Even with the right disinfectant, these errors leave bacteria alive or bring it right back:

• Putting the brush back wet. A damp brush in a closed, dark holder is a bacterial breeding ground. Always dry it fully first — this is the most common and most important fix.
• Never cleaning the holder. If you clean the brush but drop it into a mucky holder, you’ve only moved the bacteria back onto the brush. Clean both every time.
• Not rinsing off the disinfectant. Residue from bleach or other chemicals can irritate your hands and degrade the plastic over time. Rinse thoroughly.
• Using the same dirty brush without cleaning first. Grabbing a previously used brush without disinfecting it between toilet cleanings just spreads what you removed back onto the bowl.

Another detail: if your brush or holder isn’t heat-resistant, skip boiling water — it can warp the plastic. Overnight soaking works well and doesn’t require heat.

These steps apply to standard toilet brushes in home bathrooms. For brushes used in heavy-traffic bathrooms, increase the soak time on the bleach method to overnight weekly.