Do Bottle Cleaning Tablets Actually Work? (Testing on a Hydro Flask)

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A Video Review

If you'd rather watch a video on this topic, check out our YouTube video. It covers most of the same information, just in a different format if videos are more your style.  Or keep reading our post below!

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Do Bottle Tablets Work?

One major problem with big bottles like Hydro Flasks is that they can be difficult to clean.  We highly recommend bottle brush kits like this one because they make cleaning much easier and effective, but if you use your bottle regularly for coffee or tea, then you’ll probably notice stains developing over time no matter how well you clean it.

Bottle brush kit for large bottles like Hydro Flasks

Bottle Brush Kit

Highly recommended to help keep your bottle cleaner easier.

Flat bottom brushes are best for Hydro Flasks.

Get one with a straw cleaner if you have a straw lid.

​The small detailing brush helps a lot with cleaning lids and threads.

See Pricing on Amazon

​I had this problem with my 20oz Coffee bottle, and I wanted to put the stainless back in stainless-steel.  Hydro Flask has these recommendations and best practices listed on their website.  But instead, I wanted to try something that I remembered seeing on Shark Tank to see if it was the real deal.

​I ordered a pack of Bottle Bright tablets to see how they work to get the stains out.   They aren’t that expensive, and they seemed easier than using a homemade concoction.  They’re made with ingredients like hydrogen peroxide, baking soda, and citric acid and are marketed as being completely safe and without any residual tastes or smells.  

Before Picture: My Stained 20oz Hydro Flask Coffee

Before Picture: My Stained 20oz Hydro Flask Coffee

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Testing Bottle Bright Cleaning Tablets on a Hydro Flask

​Here is the inside of my Hydro Flask before the test, and you can clearly see the coffee and tea stains.  I followed the instructions on the package, which state you should fill your bottle with warm water and then add one tablet for each liter.

One liter is just over 32 ounces, so given that I was testing this on a 20-ounce bottle, adding one full tablet was more than enough.

​I dropped the tablet in, and it immediately started fizzing.  After letting it sit for 30 minutes, I poured out the water and used my brush with some clean water to rinse the bottle to make sure I got all of the tablet residue out.

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Did the Bottle Cleaning Tablets Work?

The tablet honestly worked better than I expected.  Most of the stains were cleaned out, and it almost looks like a brand-new bottle as you can see from the images below.  I didn't use any other cleaners for this test, so I know the tablet was responsible for removing the stain.

I took a quick sample taste of some water, and I didn’t notice anything that seemed off.  Glad to know that my bottle won't have a weird aftertaste.

After Picture: My Cleaned 20oz Hydro Flask Coffee

After Picture: My Cleaned 20oz Hydro Flask Coffee

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Conclusion - Do Bottle Bright Tablets Really Work?

​It's a pretty resounding YES on this one.  Overall, it was a very good first impression of the Bottle Bright tablets.  They simplified the cleaning process and took the guess-work out of the equation.

You could save a little money trying a different brand, and there are plenty of knockoffs available.  But in our opinion, it might be a good idea to stick to reputable brands instead of buying from an unknown company on Amazon.

​We hope this post and video has helped.  We’ve included links to the products, and if you purchase after clicking the link, we earn a small commission.  Every little bit helps our business, and we really appreciate the support!

Bottle Bright Tablets

These tablets worked really well for us, so we recommend using them periodically to deep clean your bottle.

See Bottle Bright on Amazon

Hydro Flask 20oz Coffee

This is our favorite bottle and lid (Flex Sip) for coffee or tea on the go.

See Hydro Flask on Amazon

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Buying a large bottle?  Keep us in mind!

Check out our Amazon store for fun and helpful accessories, like fruit infusers, cup holder adapters, and carrying slings.

See BottlePro's Store