I was surprised at what it is capable of doing. I have iron in my water and after placing it in the tank, the dreaded black streaks are gone. I tried everything and this is the only thing that has worked.
Easy to use
Drop it and forget about it
Tried one , then ,2, now three
First one seems to be working
No stains
No repeated cleaning
I couldn’t believe my eyes. One day is all it took for my toilet to look brand new!











