I'm so disappointed with this product . I bought two pump thingys and set them up two bathrooms. I really was wanting them to do thier job as described on the box.
Before a month went by the toilets were discusting...It's was like the stubborn stains settled right in.
It took considerable elbow grease and human scrubbing to clean things up.
In fairness to the product, we have clorine-free well water and may be harder than city water. Oh, but the novel idea of seeing the product in the flush...it might have worked if 4 humans hadn't dumped on them as a daily activity...
Scrubbing bubbles found a new place .....
And I'm happy the bathroom is now free of that clutter.