I love these types of cleaners you throw in the back of the toilet tank to help keep the bowl cleaner longer. I like that it turns the water blue, it just seems more hygienic to me. I also love that I got a 12-pack. I used them at my bf’s house and he’s got 3 toilets there, two of which are used daily and then a third in a rarely used half bath attached to an empty guest room. In that toilet I noticed it started leaving a thin blue ring around the water line, so I do try to go back there to at least flush the toilet every time I’m over there but I’ll probably just leave the pod out of that toilet whenever it runs out. Still no complaints from me, I love these things.