Product review (2 stars): about as good as any
This works about the same as most sold by other humidifier companies to clean them, but no better really. I have found the best is white or distilled vinegar with peroxide but please do not stand over or have your eyes close to the fumes from this combination as it can be long term harmful to vision according to studies done on these products. As long as you leave the room for the soak in the sink or in the product base, and then come to rinse it in plain water, that has come to be my favorite combination for cleaning and descaling. Not straight vinegar and peroxide but mixed in water, like gallon of water, cup of vinegar, half or quarter cup of peroxide. This also will kill any mold or mildew that might have developed.