What's the best way to maintain your thermos?

Thermosfles onderhoud
How to care for a Stanley thermos? Keep it looking like new!

At Outdoor Food, we believe in quality that lasts. That's why you'll find not only delicious outdoor meals and smart gear, but also the iconic Stanley thermos flasks . Known worldwide for their rock-solid construction, excellent insulation, and lifetime warranty.

But even a Stanley needs a little TLC. With proper maintenance, your bottle will stay fresh, clean, and 100% reliable for years to come – whether you're on a mountaintop or just commuting. This article explains exactly how to do it.


🔄 Daily maintenance – simple & fast

A good habit: rinse your thermos immediately after every use. Sounds obvious, but it really makes a difference.

Here's how to do it:

  • Use warm water and a mild dishwashing detergent

  • Don't forget the cap and the rubber seal – dirt often accumulates there unnoticed

  • Rinse well to remove soap residue

Finished? Leave the bottle open and upside down to dry. This prevents unpleasant odors and mold growth.


👃 Odors or stains? Here's the trick!

Has your bottle started smelling a bit musty after a few rounds of coffee or tea? Or are there brown residue spots? Don't panic – the solution is surprisingly simple.

Here's how to make your Stanley fresh again:
  1. Fill the bottle with warm water

  2. Add 1 tablespoon of baking soda

  3. Let this mixture sit for several hours or overnight

  4. Rinse well… and voilà!

Your bottle will smell like new again, without harsh cleaning agents.


🧽 Thorough cleaning – occasionally necessary

Do you use your Stanley intensively, or has it been a while since you've given it a proper cleaning? Then a thorough cleaning is in order.

What do you need:

  • A solution of warm water and mild dishwashing liquid

  • A soft bottle brush

  • Patience 😉

Here's how to do it:

  • Let the bottle and cap soak in the soapy water for a while

  • Use the brush to clean all corners thoroughly

  • Rinse thoroughly

  • Let everything air dry thoroughly

Tip: Leave the bottle open so that any residual moisture can evaporate properly – this prevents bacterial growth.


Stanley Lifetime Warranty

Did you know that Stanley offers a limited lifetime warranty on almost all of its bottles? This means that if you encounter any material or manufacturing defects, you can simply contact us for a solution.

How does that work?

  • Contact Stanley Customer Service

  • Or report to the point of sale where you bought your bottle – including us, Outdoor Food in Capelle aan den IJssel!

📌 Please note: always check the warranty conditions on the official Stanley website or via the card in the packaging – these may vary by region or product.


📍 Need advice? Stop by or shop online!

At Outdoor Food, we have a wide range of Stanley thermoses for every outdoor enthusiast. Whether you're looking for a robust bottle for the mountains, a compact cup for everyday use, or a large-capacity thermos for camping weekends, we're happy to help you choose.

🛒 Ordering? It's easy through our webshop .
📍 Stop by? You're welcome to visit our showroom at Cornusbaan 67A, Capelle aan den IJssel .

Do you have questions about maintenance, warranty, or which model best suits your lifestyle? Feel free to contact our team – we're happy to help.


🎥 Bonus: Check out our handy Stanley maintenance video – coming soon to YouTube!