BOTTLE BRIGHTClean Stainless Steel, Thermos, Tumbler, Insulated and Reusable Water Bottles – Cleaning Tablets are Easy and Safe to UseU.S. EPA Safer ChoiceCompact by Design (Amazon-developed Certification)

I did not have expectations for this product but my favorite stainless steel travel mug was very stained and nothing else had worked. These tablets are amazing! I used hot water and let it soak overnight. WOW! All the stains are gone, and the mug looks new. No brushes, scrubbing or strong odors. I am truly impressed. Word of caution, do not cover or seal your container while the product is working (like I did!!). The tablets are effervescent and they made my screwed in mug lid explode. Luckily it did not damage the mug. Great product. I will buy it again.

I have a Contigo stainless steel insulated travel mug that I use for coffee. Had it for years and it has accumulated what I thought was permanent coffee stain. I’ve tried other tablets, my own baking soda and vinegar soaks, scrubbing like crazy, nothing worked. One tab of this stuff in about an hour and it’s almost entirely silver again. Another tab and another hour and some gentle wiping and it’s 100% clean and shiny. I’m completely stunned and so happy! This stuff is AMAZING.

Amazing product that brought my stainless coffee mug and water bottle back to brand new.Coffee mug is 23 years of daily use. That before picture is not misleading. It was stained black. I’ve used the boiling water + baking soda + scrubbing and baking soda + vinegar + scrubbing methods before with not much luck.Boiling water + Bottle Bright for 15 mins for it back to brand new. No odors or residue after rinsing.The water bottle somehow got moldy/mildew on it. Boiling water, baking soda and scrubbing couldn’t get it off. One treatment with Bottle Bright and it’s back to new.Just wanted to point out that, as expected, it couldn’t help with the plastic coffee mug lid.Bottle Bright gets 5 stars from me.

Forget the warm water method, it doesn't complete the job. I used warm water and 15 mins for the tall stainless steel container that wasn't as dirty and water I heated in the microwave (almost but not actually boiling) and 45 mins for the short one that was badly stained.I did a second cleaning on the tall one as well as another short one that was stained even worse using the heated water and 1 hour.All 3 are now like brand new!I gave 4 stars due to the warm water method as instructions call for being useless in my experience. I WILL buy more when I need them, but I will always use heated water and 45 mins to an hour for stainless steel containers.

I wish I took the photo of before and after. I couldn’t believe it. My coffee thermos was brown inside. I couldn’t clean it no matter what. And it was expensive to just throw it away. I tried this Bottle Bright tablet thinking it wasn’t going to work. I followed the instruction. It was easy and simple to follow. The inside of my thermos looks new. Not a spec of brown spot. Clean and shiny. It’s amazing.

I drink lots of tea and coffee from my different Yeti cups, and they’ve developed a nasty-looking tint on the inside that no amount of washing can get rid off. I bought these tablets as a last-ditch effort, with no real expectation that they would work. Boy, was I wrong! One tablet in your cup with warm water for 15-30 minutes, then wipe out cup and wash. My Yetis are sparkling clean once again, and with so little effort. I’m going to now buy a bigger box now that I know it works!

These tablets worked great!! Didn’t have to scrub any residue!! Would absolutely recommend these tablets to anyone that has a stainless steel cup, tumbler, or bottle that is severely stained and needs to be cleaned easily!!!

I don't give 5 stars easily. I usually expect some hype in the descriptions. The quality isn’t quite as good as described, but okay. The results are close to claims so we’ll call it good. That's not the case here.I followed instructions and it worked EXACTLY as claimed. I drink a lot of chai and teas and my cup had a brown layer that wasn't coming out short of steel wool, and its a tight fit to scrub so I took a chance on these. There are 2 sets of instructions 1) warm water and 30 minutes or 2) hot water overnight. I chose 2 because I knew my stains were stubborn.The directions said “hot” so I got my hot water directly from the coffee maker and filled it full. The tablet fizzed like crazy and when it slowed, I put the lid on and left it. The next morning I poured it out and, WOW! My cup gleamed like new.My husband tried it next. He’s a coffee drinker. He used hot water from the tap and let it sit 30 minutes. He said there were a few patches left, but they came right off with a wipe of our cup scrubber. He was also impressed. These things just work!I love a product that does exactly what its supposed to do, and I love it even more when I see “Made in the USA” on the packaging. It’s why I tried this brand first, and performance is why it will going on my reorder list!