Vapofil mixes perfectly with distilled water and doesn't gunk up the machine

I usually hesitate to add any eucalyptus or menthol drops directly into my bedroom humidifier because they inevitably leave a nasty, sticky film on the plastic basin. I gave Vapofil a try after my sister mentioned it dissolves much cleaner. She was completely right. I've been using it for about two weeks now to deal with this relentless dry winter air and my kids' stuffy noses. It disperses evenly throughout the night, leaving a really crisp, breathable scent in the room rather than that overwhelming chemical smell you get from drugstore brands. Best of all, when I go to rinse the tank the next morning, there's absolutely no oily residue left behind. A single bottle seems like it will last us the entire cold season since you really only need a few splashes per gallon.