Product review (5 stars): I didn't read the ad! Wrong thing for me, LOL...
Apparently I bought cartridges for my Venta Ultrasonic and then saw that other customers also bought this. Blindly into the cart it went. DON'T use this in anything that is a vaporizer or misting ultrasonic machine, it will gag you. It's for the evaporative methods of humidification. I should have paid closer attention.