How to Clean Hydroflask Straw Lid

How to Clean Hydroflask, Straw Lid and Lid Gasket

Hydro Flask has become a popular brand for water bottles, coffee flasks, and other drinkware. They are known for their durability, long-lasting insulation, and stylish designs. If you own a Hydro Flask, you love it and use it daily. But, as with any reusable container, it can become dirty and stinky with regular use. After a while, it can start to affect the taste of your drinks, and no one wants that.

If you want to keep your Hydroflask in top condition, it’s essential to know how to clean it and its accessories – especially the straw lid and lid gasket. In this post, we’ll cover everything you need to know about cleaning your Hydroflask, straw lid, and lid gasket to keep them sparkling and hygienic.

How to Clean Hydroflask

Before you start cleaning, make sure you have the necessary cleaning items. You will need a bottle brush, warm soapy water, vinegar, baking soda, and a dish towel. If you have a Hydro Flask with a straw, you may also need a pipe cleaner to reach inside and clean it. You can also use white rice to soak your flask, which does a great job in cleaning the hard-to-reach parts.

Disassemble Your Hydro Flask

Most Hydro Flasks come with a straw or a lid that needs to be removed for cleaning. Make sure you completely disassemble the Hydro Flask and separate each component for better cleaning.

Wash the Flask

Now it’s time to clean the flask. First, fill the flask with warm soapy water and shake it well to disperse the soap around all areas of the flask. Then, use a bottle brush to clean the interior and exterior of the flask. Don’t forget to clean the neck and threading areas of the flask. Next, you can use vinegar to eliminate stains and odor. Dilute vinegar and fill the flask halfway, let it sit for a few hours, then rinse the flask with water.

Getting Rid of Gunk with Baking Soda

Over time, the lid gasket of your Hydroflask can accumulate dirt, mold, and gunk that can make it difficult to unscrew. If you’re struggling to remove the gasket, try soaking it in a solution of warm water and baking soda for a few hours. The baking soda will help to break down any buildup and make it easier to clean. You can also use a toothbrush or a small bristled brush to scrub the gasket gently. Rinse the lid gasket in clean water and let it air dry before reattaching it.

Dry Your Hydro Flask

After cleaning, make sure to dry all Hydro Flask components completely before reassembly. Use a dish towel or leave it open to dry, depending on the material. Keep in mind that Hydro Flask should not be left in the sun to dry.

How to Clean Hydroflask Straw Lid and Gasket

Disassemble Your Straw Lid and Gasket

The first step in cleaning your straw lid is to disassemble it. You can do this by pulling the straw out of the cap and the silicone gasket. Make sure to do this gently to avoid breaking any parts. Once you have disassembled the lid, you can proceed to clean each part separately.

Use Hot, Soapy Water

One of the easiest ways to clean your Hydroflask straw lid is to use hot, soapy water. You can use mild dish soap, and make sure to scrub every part of your straw lid thoroughly. Use a sponge to scrub the inside of the straw to remove any dirt or bacteria buildup. Don’t forget to clean the silicone gasket, which holds the straw in place.

White Vinegar Solution

If you want to remove stubborn stains or odors from your Hydroflask straw lid, you can use a white vinegar solution. Mix equal parts of water and white vinegar in a bowl and soak your straw lid in it for at least 30 minutes. You can also use a small brush to scrub the stains away. Make sure to rinse the straw lid thoroughly with water after soaking.

Baking Soda Paste

Another effective cleaning solution is a baking soda paste. Mix baking soda and water until you get a thick paste, and apply it to the straw lid using a soft-bristled brush. Leave the paste on for 15 minutes and rinse it off with water. The baking soda paste can remove tough stains and odors from your straw lid.

Dry and Reassemble

Once you have cleaned every part of your Hydroflask straw lid, make sure to dry them properly. Use a clean towel to wipe each part, and let them air dry for a few hours. Once everything is dry, reassemble your straw lid by putting the silicone gasket and the straw back in the cap.

How do you get mold out of a Hydro Flask

To clean your Hydro Flask, you’ll need a few things. Firstly, hot water. This can either come straight from your faucet or be boiled on the stove. Next, you’ll need some dish soap or white vinegar. You can use either one, depending on your preference. Lastly, you’ll need a cleaning tool. A soft-bristled brush or sponge will work well, or you can purchase a specialized cleaning brush for bottles.

Remove the Mold

Once you have your materials, it’s time to get rid of the mold. Begin by filling your bottle with hot water, leaving a few inches at the top. Add a few drops of dish soap or white vinegar, depending on what you decided to use. Screw the cap on tightly and shake the bottle vigorously. Make sure you agitate the solution enough to reach all the crevices.

Scrub Thoroughly

Now that you’ve loosened the mold, it’s time to scrub it out. Use your brush or sponge to scrub every inch of the inside of the bottle. Pay special attention to the areas where the mold was growing. Re-fill the bottle with hot water and shake it again to rinse out all the suds.

Dry Completely

After you’ve rinsed out the solution, you need to dry the bottle completely. Letting it sit with traces of moisture can create ideal growing conditions for mold. Use a clean cloth or let the bottle air dry upside down until no moisture remains.

Repeat if Necessary

Sometimes, mold is persistent and may require multiple cleanings. Don’t be discouraged if you can’t get it all out the first time. Just repeat the steps until the mold is gone.

Preventing Smelly Hydroflasks

If you’re using your Hydroflask frequently, it’s essential to clean it regularly to prevent smells and bacteria. One tip is to clean it before each use and to avoid leaving it unsanitized for too long. You can also add some lemon juice or vinegar to increase the cleaning power of your solution. In addition, it’s recommended to store your Hydroflask with the lid off to allow any moisture to evaporate.

Maintenance Tips for Long-Term Use

To keep your Hydroflask in top condition for a long time, it’s essential to use it properly and maintain it regularly. Avoid filling it with carbonated drinks and temperature-sensitive liquids, as they can cause pressure buildup and damage the Hydroflask. Don’t put it in the freezer or microwave either, as this can warp the bottle and damage the insulation. Finally, make sure to replace any worn-out accessories regularly, such as the straw lid and lid gasket.


A clean and hygienic Hydroflask is essential for keeping you refreshed and hydrated all day long, so it’s vital to know how to clean it properly.

Knowing how to properly clean your Hydroflask straw lid is essential to maintain its cleanliness and prolong its longevity.

By disassembling your straw lid, using hot, soapy water, vinegar solution, baking soda paste and properly drying your straw lid, you can keep it in top shape for long-term use.

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