stainless steel ombre insulated water bottles Australia Solkatt Designs

Why Dishwashers Are a No-Go - Water bottles and travel cups

The Lowdown on Stainless Steel Double-Walled Vacuum Insulated Water Bottles: Why Dishwashers Are a No-Go

In recent years, stainless steel double-walled vacuum insulated water bottles and travel cups have surged in popularity among eco-conscious consumers. These sleek and durable vessels promise to keep beverages hot or cold for hours, making them an ideal companion for busy days and outdoor adventures alike. However, despite their many advantages, there's one thing you should never do with these trusty companions: toss them into the dishwasher. While it might seem like a convenient way to get them squeaky clean, subjecting stainless steel double-walled vacuum insulated bottles and cups to the dishwasher can actually do more harm than good.

The Rise of Stainless-Steel Insulated Bottles

Stainless steel double-walled vacuum insulated bottles have revolutionized the way we carry beverages. Their construction involves two layers of stainless steel with a vacuum between them, which minimizes heat transfer and keeps drinks at their desired temperature for extended periods. This design makes them incredibly effective for both hot and cold beverages, maintaining the original temperature for hours on end. Additionally, their robust build means they can withstand the rigors of daily use, making them a sustainable and long-lasting choice compared to single-use plastic bottles.

Why Stainless-Steel Bottles Should Avoid the Dishwasher

1. Potential Damage to the Insulation

The vacuum insulation is the core feature that makes these bottles so effective. However, the high temperatures and harsh detergents used in dishwashers can compromise this insulation. The intense heat can cause the vacuum seal to expand and contract, potentially leading to small breaches that reduce the bottle’s insulating properties. Over time, this degradation means that your once-efficient bottle may no longer keep your drinks as hot or cold as it used to.

2. Risk of Warping or Discoloration

Stainless steel is known for its durability, but it's not invincible. The combination of heat, moisture, and harsh detergents in a dishwasher can lead to warping and discoloration of your bottles and cups. Warping can distort the shape of the bottle, affecting its functionality and appearance. Discoloration, on the other hand, can make your once-shiny bottle look dull and worn. This not only detracts from its aesthetic appeal but can also suggest a compromise in its structural integrity.

3. Potential for Leaks

Many stainless-steel bottles and cups come with seals and gaskets to prevent leaks, especially those with screw-on lids or flip tops. The heat and agitation of the dishwasher can degrade these seals over time. As these seals become less effective, the risk of leaks and spills increases. This can be particularly frustrating when you're on the go and relying on your bottle to keep your bag dry and your drink contained.

The Best Way to Clean Your Stainless-Steel Bottle

Fortunately, cleaning your stainless-steel double-walled vacuum insulated water bottles and travel cups is quite simple and doesn't require a dishwasher. Here are some tips to ensure your bottles stay in top condition:

Hand Washing

The most effective and gentle way to clean these bottles is by hand washing them with warm, soapy water. Use a soft brush or cloth to gently scrub the interior and exterior of the bottle. Be sure to pay extra attention to the lid and any seals or gaskets to remove any residue that could lead to odours or mould growth. Rinse thoroughly to ensure no soap residue remains, which could affect the taste of your beverages.

Avoiding Abrasive Cleaners

Abrasive cleaners and scrubbing pads can scratch the surface of stainless steel, which not only affects the appearance but can also create crevices where bacteria can grow. Stick to gentle cleaning methods to keep your bottles looking their best. If you encounter stubborn stains or odours, a mixture of baking soda and water can be an effective and gentle solution. Fill the bottle with the mixture, let it sit for a few hours, and then rinse thoroughly.

Regular Maintenance

Regular maintenance is key to prolonging the life of your stainless-steel bottles. After each use, rinse the bottle with warm water to prevent residue build-up. For a deeper clean, use a bottle brush to scrub the interior and ensure no residue remains. Periodically check the seals and gaskets for signs of wear and tear and replace them if necessary to prevent leaks.

Air Drying

After washing, let your bottle air dry completely with the lid off. This prevents moisture from getting trapped inside, which can lead to mould and mildew. If you're in a hurry, you can dry the bottle with a clean cloth, but make sure it is completely dry before reassembling and storing it.

Benefits of Proper Care

By taking proper care of your stainless-steel double-walled vacuum insulated water bottles and travel cups, you can ensure they’ll continue to keep your beverages at the perfect temperature for years to come. Proper maintenance not only preserves the functionality of your bottles but also extends their lifespan, making them a more sustainable choice in the long run. Here are some benefits of proper care:


With proper care, stainless steel bottles can last for many years, reducing the need to frequently replace them. This longevity makes them a cost-effective and environmentally friendly option compared to single-use plastic bottles or lower-quality reusable bottles.

Health and Safety

Regular cleaning and maintenance ensure that your bottle remains free from harmful bacteria and mould, which can affect your health. Stainless steel is naturally resistant to bacterial growth, but proper cleaning is essential to maintain this benefit.


Well-maintained bottles retain their sleek, stylish appearance, making them a pleasure to use and carry. Whether you're at the office, the gym, or out on an adventure, a clean and shiny bottle makes a positive impression and reflects your commitment to quality and sustainability.


In conclusion, while stainless steel double-walled vacuum insulated water bottles and travel cups offer numerous benefits, it’s crucial to avoid putting them in the dishwasher. The high temperatures and harsh detergents can damage their insulation, cause warping or discolouration, and degrade seals, leading to leaks. Instead, hand washing with warm, soapy water and a soft brush is the best way to clean these bottles and ensure they remain in excellent condition.

By taking a little extra care, you can enjoy the full benefits of your stainless steel bottles for years to come. So next time you reach for your favourite reusable bottle or cup, remember to give it the TLC it deserves—it’ll thank you by keeping your drinks perfectly hot or cold, and looking great while doing it. Stay eco-conscious, stay hydrated, and enjoy the many advantages of your stainless steel companions!

Back to blog