Only 30 days in use but results are promising. So much so, I ordered 4 more!
The Krazy Klean units are working fine so far. We have mineral rings that will not come off of our toilets for a long time. Not sure they will be able to clear those off. Otherwise, they seem to be working fine.
My only hope is I remember in 10 years. As far as the product goes, so far so good.
Cleaned my bowl once really good then put this in and haven’t had to clean it at all in a week. Impressed me like no other.
I bought four of these for our house, put them in each tank, but didn't tell anyone. Within a week previously soiled bowls were clean! I will just let them think someone is actually cleaning their dirty toilets!