Quick Answer
Your bottle brush should be rinsed and air-dried after every use, washed thoroughly with hot soapy water daily, and sterilised at least once a week. It should be replaced every 4 to 8 weeks — or sooner if the bristles splay, shed, or develop an odour. A dirty bottle brush defeats the purpose of cleaning your bottles and can introduce bacteria rather than remove it.
Why Cleaning Your Bottle Brush Matters
A bottle brush that is not cleaned and dried properly becomes a breeding ground for bacteria, mould, and mildew. Studies on kitchen cleaning tools consistently show that sponges and brushes are among the most bacteria-laden items in the home. A contaminated bottle brush can transfer bacteria directly to the feeding equipment you are trying to clean — the opposite of what you want.
How to Clean Your Bottle Brush: Step by Step
After Every Use
- Rinse the brush thoroughly under hot running water immediately after use, working the water through the bristles to remove all traces of milk residue and soap
- Shake off excess water
- Store upright or hang to allow air to circulate around the bristles and the brush to dry completely between uses. Never store a wet brush in a closed container or drawer
Daily
- Wash the brush with hot soapy water, scrubbing the bristles against your palm or a clean surface to work out any residue
- Pay attention to the base of the bristles and the handle, where milk and soap can accumulate
- Rinse thoroughly and allow to air dry completely
Weekly (or More Often if Needed)
Sterilise your bottle brush using one of the following methods:
- Steam steriliser: Place the brush in your electric or microwave steam steriliser along with your bottles and other feeding equipment
- Boiling: Submerge the brush in boiling water for 5 minutes. Check that the brush is heat-safe before boiling — some plastic handles may warp at high temperatures
- Cold water sterilising solution: Submerge in sterilising solution (such as Milton) for at least 30 minutes, then rinse with cooled boiled water
- Dishwasher: If your brush is dishwasher-safe, running it through a hot dishwasher cycle is an effective way to clean and partially sterilise it
Signs It Is Time to Replace Your Bottle Brush
No amount of cleaning will restore a brush that is past its useful life. Replace your bottle brush when you notice:
- Bristles that are splayed, flattened, or no longer hold their shape
- Bristles that are shedding — loose bristles in a bottle are a choking hazard
- Persistent odour that does not go away after washing and sterilising
- Discolouration, mould, or mildew on the bristles or handle
- Any visible damage to the handle or brush head
As a general rule, replace your bottle brush every 4 to 8 weeks with daily use. If you are washing bottles multiple times a day, err toward the shorter end of that range.
Our Recommendation
Starting with a well-made brush makes the cleaning routine easier and the brush last longer. The Emulait Bottle Cleaning Brush is designed for daily use with baby bottles — durable bristles, a long handle for full bottle reach, and easy to rinse and dry between uses.
Key Takeaway
Rinse and air-dry your bottle brush after every use, wash it daily with hot soapy water, and sterilise it weekly. Replace it every 4 to 8 weeks or at the first sign of wear. A clean, well-maintained bottle brush is as important as the bottles themselves — it is the tool that keeps everything else hygienic.
Parents Also Ask
Do You Need a Special Brush to Clean Baby Bottles?
How to Properly Clean Baby Bottles Between Feedings
What Baby Bottle Accessories Do You Actually Need?
This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your pediatrician or a qualified healthcare provider with questions about your baby's health.