Fantastic cleaning product
I don't use this product to clean a humidifier but as a cleaning product.  It takes hard water off of any surface like you would not believe.  I sprinkle a little of this on on get some on a toothbrush.  It bubbles and just eats away the hard water.  You can then rub it with the toothbrush and it will general vanish.<br />Love this stuff,  I've been using it to clean sinks, tubs, toilets, etc for many years.<br />C Meyers<br />Ogden, Ut
Rating: 5 stars