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

I'm old school "Don't touch my cup or thermos." So they get pretty bad... followed instructions using hot water. 30 minutes and both are spotless. The dirty thermos water looked like I just brewed a very burnt pot of coffee, and the stainless steel is clean. The tablets work great!

This stuff actually works!No scrubbing at all... I just dropped a table in the tumbler and poured some hot water in. In about 30 minutes I went back and it looks absolutely brand new! I had dark tea stains in all my tumblers... not anymore!

Clean the inside of your metal insulated tumbler with these fizzy tablets! When soap and water won’t remove coffee and tea stains this product will! Works great!

Simply the best, don’t mess with the rest!Nothing compares to these little powerhouses and how they whiten and clean! I drink strong black English tea in my thermos all day and these little tablets effortlessly remove the stains and bitterness of the tannins with a bit of hot water and a 30 minute soak. (I do intermittently clean with clean bc I live with excessively hard water, too.).

I highly recommend this effective bottle cleaner. The only reason I rated it 4 stars versus 5 stars is because I have to wash the bottle or tea mug with dish soap after I dump out the cleaner because there is a lingering fragrance despite being labeled “fragrance free”. I’m not sure where the fragrance comes from because none of the listed ingredients are a fragrance. The smell and residue to easily disappear after a quick wash with dish soap and it works much better than dish soap alone so I keep using it.

Should not have waited so long to give this a try! Used in a large Stanley thermos that is used to keep coffee -- worked great! Super easy.

One of these tablets got six years worth of tea staining out of my hydroflask travel mug that I couldn't fit my hand Into to clean. Will buy again

I saw this product (I think maybe on Shark Tank)...anyways have been meaning to buy it to try it out. I really didn't think it would live up to its claims. Most products do not. I bought this during prime day and thought to give it a try. So glad that I did. I use hydro flasks daily. I have all the different sizes. In just one day I will have one to use for water, one for pepsi and one for tea or maybe coffee. So, to try this tablet out I decided to use it on my tea/coffee hyrdo flask. You can easily tell the hydro flask was stain in the inside. The product suggested for heavy stain to leave overnight (so that is what I did). I filled it with hot water, put the tablet in (initially it started to fizzle and overflow so be mindful when filling it up with hot water and put a paper towel under it to avoid spills). I boiled hot water in my water kettle for use so that it was super hot. I left it overnight. In the morning I took a bottle brush and swirled it inside the hydro flask and dumped out the water and rinsed it out. AMAZING! It looked brand new, literally. It was flawless. All stains gone. Metal shiny inside. No after taste after cleaning the hydro flask. I am sold. I had a friend witness the transformation and they were sold on the product immediately and did their hydro flask with the same results. It cleans it so well that you could easily put your hydro flask on a shelf and sell it as brand new, no kidding. So, for this product what it claims to do, it does. Even hydro flask sells only these same tablets by Bottle Bright on their website. Highly recommend.