Bottle Bright Single Pack (12 Tablets)- Clean Stainless Steel, Thermos, Tumbler, Insulated and Reusable Water Bottles –Cleaning Tablets are Easy and Safe to Use

I was somewhat skeptical when I tried these tablets, but I'm now a total believer. I make coffee in a stovetop espresso pot every day, and pour the finished coffee into a 1-pint stainless steel thermos to keep it until I'm ready to use it. The strong coffee can sit in the thermos for at least 24 hours, and the staining and crusting inside the bottle builds up. I tried bleach ...no real effect. I was unable to scrape at the buildup due to the small size of the opening and the narrow space inside the bottle. I looked in at it with a torch, and was appalled at the state of the crusted residue in the bottle. Plus there was that constant smell of stale coffee. I divided one of these tablets in half (around a half litre of water would suffice), put it inside the thermos, topped up with boiling water from the kettle, and left it to do its thing for 18 hours. When I poured the stuff out, the interior was absolutely spotless. (Again, I checked it using my torch.) Furthermore the smell of stale coffee was completely gone. This is like a brand-new thermos now. Caution: the stuff does bubble up when the water gets added, so I don't recommend tightly fixing a lid to the bottle while the stuff 'works.' I just loosely put the top on the bottle, to let gas/air escape. There was no problem at all. I'm going to soak the stainless steel coffee pot next, and see how that works. Very impressed. This really does the job.

I don't usually leave reviews, but these tablets worked so well on my HEAVILY tea stained thermos that they deserve a review. Absolutely amazing. The inside of my thermos literally looks brand new!! If you have something heavily stained on the inside, leave the tablets in overnight and rinse with water. You'll see the stains literally just falling out when you empty it in clumps!

My ember mug built up tea stains for around 6 months before I decided it really needs a clean! I tried a lot of general cleaning methods with no luck and a lot of harsher solutions would damage the mug. Decided to try this due to previous reviews. I popped one in with hot water and left it overnight. The next morning I couldn’t believe it - the stains just simply wiped off! It was like I had a brand new day one ember mug! I will be using these in the future for sure! Anyone who has an ember mug and is worried about it damaging it but wants a clean/brand new ember mug feeling, USE THESE TABLETS! Pro tip: it can fizz a bit when you pop the tablet in hot water so don’t fill it to the brim of the mug.

Really great for some stubborn stains out of my favourite travel mug - stainless steel & a china mug which had a particularly difficult stain in the edge where base meets wall of cup

My travel mug has been stained brown for the longest time no matter how many times I wash it or scrub it I couldn’t get the stains out and just assumed that it will always be brown or I will have to buy a new one. I got these tablets and OH MY GOD it has worked so well that my travel mug looks brand new! I even had to ask my hubby if it was actually silver in the first place because it’s been brown for so long I couldn’t remember! Best purchase ever!! Definitely recommend

Bought these to help cleaning the water tank for my coffee machine which is difficult to clean. These do the job perfectly and I will be buying more when I have used them all.

I am guessing with the right combination of say vinegar and bicarbonate you could get the same effect BUT these are easy to use and work really well, the stains just lift and float off after a few hours of soaking. Keeps my thermo cup, that I use daily for tea, like new inside. I've tried cheaper ones too (that had an odd, mint aftertaste and smell) and I've gone back to these because they work better and there's no aftertaste or smell at all.

It's an amazing product. I put some boiling water from kettle an I left it about 2 hours. I have this coffee thermos and I have been using it for more than a year now, and imagine how much stain was inside. Because the coffee I used was Lavazza and it's a very strong coffee. Now my thermos looks brand new. 💯% worth it.

Great results.

Very happy with this product! It made my thermos flasks look as new!

Très bien, fonctionne bien

If I could give this product 10 stars I would. I have a stainless steel yeti cup I use for coffee every day. The inside was very badly stained.. until I used this today! It’s seriously like brand new. My husband was impressed - I’m soaking his cup right now 😃

I have a thermos (a tad bit over 1 L) that I use everyday for my coffee. It gets rinsed whenever it’s emptied and washed in the dishwasher a couple of times a week. But since it’s had coffee in it daily for a year +, the stainless steel inside has become stained a lovely gold color but still. So I decided to try one of these tablets with a liter of hot tap water. First, I hadn’t been aware that it bubbles upon contact with water (I had expected foaming and effervescence, but not actual bubbling like a pot on a burner). So that made a teensy mess (easy to clean up). Then, after I let it sit for half an hour I dumped out the water - and most of the bottle was still stained. A bit lighter, and I could see a few patches of silver, but disappointing. I let the bottle sit a couple of hours and then I decided to try hotter water. So I set my kettle to boil and poured it in my thermos, and dropped a tablet in - thinking it would just bubble a bit like the first time. Big mistake! It became a fountain of boiling water! But it did get all the stains out and cleaned the bottle nicely once the chemical reaction was done. And the counters and floor that got wet were also cleaned nicely. So I’m very happy with the product and will use it in the sink next time time. tldr: Boiling water is most effective with the tablets, but put bottle in the sink and step back because it *will* shoot up into the air. But it also will clean everything all at once (no long wait!).