Not the greatest

We have hard water where we live this product may not work well in hard water but there was no difference before we put it in vs after except for a fragrance. It left a black ring around the bowl within 48 hours.

Burns the eyes!

I figured id give this a try since it was on sale. Well after the first use the fumes were so strong that my eyes were burning, despite only having not used a lot of product. Im sure it works very well as a disinfectant but I dont feel comfortable using it anymore.