Smells weird…
I really disliked that there were zero instructions in English, and that there is no ingredient list either. Everything is in Korean on the box…lucky for you, I can read Korean!  It basically says mix it with 400ml of hot water with one tablet. So if you are cleaning a large water bottle you will likely need 2-3 tablets to clean just one bottle.<br />Unfortunately, I couldn’t really tell if this stuff was doing anything at all because it only bubbles for a few seconds while the tablet quickly dissolves. Then once everything is dissolved, it becomes a slippery liquid that smells really weird. I cleaned 4 water bottles with it. One plastic Tritan one, and 3 from Takeya that had a stainless steel interior. None of them looked super clean or special afterwards. Maybe my bottles weren’t dirty enough since I only use water, no tea or coffee in these bottles. Basically, it was as if I just cleaned it with regular soap and water. It did get my water bottles clean but I had to rinse and wash again because of the weird smell I mentioned earlier. They are travel friendly as they are individually packaged which is really convenient if you travel a lot.
Rating: 2 stars