Product review (1 stars): Awful do not buy it...
My Venta humidifier no longer works after one use of this water treatment additive. It left a glue/gel type substance in the lower tank which also got into the oscilator so the humidifier no longer works. It took more than 2 hours to clean and remove most of the glue/gel but there is still a layer of the residue that will not come of from the bottom. Please don't waste your money on this product.