Bottle Bright 36 Tablets - Clean Stainless Steel, Thermos, Tumbler, Insulated, Plastic and Reusable Water Bottles –Bottle Bright Cleaning Tablets are Easy and Safe to Use

amazing little cleaning tablets, instructions are simple and it cleans really with no after taste, nothing negative to say about it except that the price increased a lot maybe because of the new seller of this item. But it cleaned all my steel water bottles amazingly well, it has a slight soapy odor to it but that's it. It doesn't stick to the steel in any way

This REALLY works with just 1 tablet!! A year’s worth of daily black tea stains disappeared overnight with a rinse-out. Before and after pictures to prove it. Made in the USA. Outstanding.

OMG! This is a great product! My husband and I are big fans of coffee and tea. We use tumblers and thermo carafes all the time. Even if I washed them immediately after use, it was hard to remove all the buildup residue. Especially tall thermo carafes with a small mouth, I can’t wash them even with a bottle brush. After 6 hours soaking with a couple of this cleaning tablets and warm water, most of heavy buildup stains gone! The rest of it, I could washed off completely by rinsing and light brushing. It is effective and effortless! I highly recommend this! One small thing that I want them to improve is the size of tablets could be varied. For example, my travel tumbler is way smaller size that can’t have 1 liter—the amount of the instuction required. I could cut them myself, but it would be clean and easy if it was a half size of the current one. Just a small thought.

Work very well on my Yeti tall mug; cleaned all the tea and coffee stains.

I had a very nasty tea stain in my Yeti mug (almost black). Nothing I did could make it look new again. It took 4 attempts with these tablets - 3 times over night and 1 for 4 hours. The final result was astonishing....just like new. Now once a week I put a tablet in and let it do it's magic. I am thrilled to have found this product. I thank all the reviewers who took the time to rate this product - their reviews guided me to finding success.