Sudstainables Water Bottle Cleaning Tablets – 36-Pack, Chlorine-Free and Odorless Cleaner for Hydration Bladders, Stainless Steel, Tumblers, and Glass Bottles - Removes Stubborn Stains and OdorsCompact by Design (Amazon-developed Certification)

So far, so good. I've only used it twice, but my husband drinks iced tea out of his "bottle" and it can stain. I threw away his last one because it became so stained and I couldn't get it "clean"

I don't know how anyone using a drink flask gets by without these.I use these tablets to clean my water bottles (even though I use the bottles for tea).They clean them so well, I've started using the tablets for cleaning the coffee cups that the dishwasher didn't get clean, and all sorts of other things. I have them on subscribe and save!

These worked exceptionally well when cleaning out a Camelback hydration vest insert. While the solution smelled a bit minty when the tablet was dissolving, there was no aftertaste whatsoever, and the liquids I put in it were back to tasting normal. They were super easy to use: just drop them in and let it sit for 15 minutes.

These cleaning tablets are semi effective. They get most of the stain out, but not entirely. I use them to clean my yeti bottle that I use for hot tea and typically use a tablet to remove stains every few weeks (yes, I do wash in between). A previous cleaning tablet that is no longer available would clean with one tablet. It takes at least two of these tablets to get the bottle clean any inside to its original color.

I recently cleaned any ancient Keurig with 2 tabs, worked great. No funky smell. Worked great on all my Stanleys!

Once rinsed after using tablets, I didn’t notice any lingering poor taste. Recommend

Work great and so easy to use!

These do not do as good of a job as others I’ve had before. They do dissolve well and quickly, but don’t leave surfaces sparkly as some others do. There is not after smell or taste when thoroughly rinsed.