How Often Should You Replace Your Toilet Brush?

By Toss Wand · October 30, 2026

That's the answer you'll find almost everywhere. What you won't usually find is the fine print: six months is a rule of thumb, not a health standard. The condition of the brush tells you more than the calendar does.

Where the six-month rule comes from

The figure is repeated widely. Hunker, for example, says to change a standard brush at least every six months and attributes that to The Hartford. None of the sources we checked cites a study behind the number.

Not everyone follows it, either. In Consumer Reports, a representative of OXO, which sells toilet brushes, says that if you clean yours regularly, you shouldn't need to replace it until the bristles discolor, bend out of shape, or fall out, or it smells even after cleaning.

We also looked for a study that swabbed household toilet brushes and didn't find one. The closest research covers other things. A 2024 paper on public restrooms, for instance, notes that flush aerosols can contaminate toilet seats, lids, floors, and nearby surfaces. That's a fair reason to keep anything stored beside a toilet clean, but it can't tell you how many months a brush lasts.

So use six months as a reminder to take a hard look at your brush, then let its condition make the call.

Five signs it's time, whatever the calendar says

• The bristles are bent, clumped, or splayed. A brush that has lost its shape won't reach under the rim properly.
• Bristles are falling out. Those loose bristles are also heading for your bowl and your pipes.
• It stays discolored after a deep clean. Some staining on a brush is normal. Staining that won't lift means it's done.
• It still smells after cleaning. If a proper clean doesn't fix the smell, nothing will.
• The handle or head is cracked. Cracks are hard to clean, and a snapped handle is a mess you don't want to have.

And if you can't remember when you bought it, that's probably your answer too.

How long a brush lasts depends on where it lives

The commercial figures come from a UK washroom supplier. Like the six-month rule, they're trade advice rather than tested limits.

Cleaning can buy you more time

Regular cleaning is what makes it reasonable to keep a brush until it shows wear. Before you decide a stained or smelly brush is finished, give it a proper deep clean and check again. Our guide on how to clean a toilet brush has the steps, including why bleach must never meet toilet bowl cleaner.

How to throw away an old toilet brush

Seal it in a bag and put it in the household trash. Don't try to flush any part of it, and keep it out of the recycling unless your local program specifically accepts it. If the holder is stained or cracked, send it along too, so your new brush doesn't start life in the old one's water.