5 Essential Tips to Maintain Bottle Hygiene (and Prevent Mould!)

5 Essential Tips to Maintain Bottle Hygiene (and Prevent Mould!)

Keeping your bottles clean and mould-free is crucial for ensuring a healthy, long-lasting drinking experience. Whether you’re using a water bottle, insulated flask, or travel mug, cleanliness is key. In this post, we’ll cover five essential tips to maintain your bottle hygiene. Let’s dive in!

1. Always Use Soap and a Bottle Brush for Cleaning

After each use, it’s important to thoroughly wash the interior of your bottle to prevent the formation of biofilm. A simple rinse with water isn’t enough to remove bacteria or residue. Use soap and a bottle brush to scrub the inside. If your bottle has a narrow mouth, make sure to choose a brush that fits the size. This will help you reach every corner and ensure no bacteria remains.

Pictured above: Long-handled Silicone Bottle Brush

2. Don’t Neglect the Cap Rings and Stoppers

If your bottle has cap rings or stoppers, these are areas that can easily trap liquids, especially if you’ve used the bottle for flavoured drinks like tea or coffee. Make it a habit to regularly remove and wash these parts to prevent mould growth. It’s a small but important step that makes a big difference in keeping your bottle fresh.

3. Use a Multi-Purpose Brush for Deep Cleans

For those hard-to-reach areas like the bottle cap and other crevices, a multi-purpose brush is your best friend. A deep clean every few weeks will help ensure your bottle stays in top condition, even with heavy use. Don’t forget the bottle mouth where residue builds up most easily!

Pictured above: Multi-functional Cleaning Brush

4. Eliminate Odours with Baking Soda

Stubborn odours can be tricky to banish, especially after storing flavoured drinks. Baking soda is a natural deodorizer that works wonders. Add 1-2 tablespoons to your bottle (depending on its volume), dissolve in warm water, and shake well. Let it soak for a few hours or overnight before rinsing thoroughly. This simple trick will leave your bottle clean and odourless.

We like: Arm & Hammer Baking Soda for it's value and effectiveness

5. Always Ventilate Your Bottles After Washing

After washing, resist the urge to close your bottle immediately. Air drying your bottles thoroughly is essential to prevent moisture build-up, which can lead to mould. Leave the bottle uncapped until it’s fully dry before storing or using it again. It’s an easy step that can extend the life of your bottle and keep it hygienic.


Maintaining bottle hygiene doesn’t have to be complex. By following these simple tips, you can ensure your bottles stay clean and fresh for your health.

If you’re in need of a new bottle or flask, check out our collection on the website. Shop now for high-quality and beautiful drinkware that fit seamlessly into your daily routine!

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