Hi CFTraveler,

You are totally right!! I have tried many different ultrasonic humidifiers/diffusers with frankincense oils and they all worked great!!

I intentionally bought a range of different types, and they were all less than $20, some of the USB devices were less than $8. I purchased them all from Ebay. I only used the ones that say they can take essential oils, but they all seem work on the same basic design (I suspect all of them can take oils, even if they don't state it specifically).

If you give this a try, please let us know how it worked out for you. Myself and two other people that I know have used ultrasonic humidifiers with frankincense oil and enjoyed great results.