Product review (5 stars): Great Treatment
One of my vaporizers is the evaporative style - that is a fan blows air through a sponge like material to put water in the air.  I have been very happy with it until it started to smell, and the evaporator "sponge" turned black.

I found this Kaz Bacteriological  And ordered it.  My problem is solved.  A few drops of this fluid put in the water and eliminates the bacteria that cause the problem.

The smell is gone.  The blackness is gone, and the air is now refreshing.  I recommend this product.