When I was first diagnosed with Pseudomonas last fall, the device they gave me for inhalation of Tobi was horrible, (a Philips device) but I thought it was supposed to work that way. Finally I called the pharmacist and got a new Pari LC Plus which was a day and night experience. Although the Tobi still chokes me, the delivery with the Pari is clean, not spewing medicine all over my face, clothes etc. So, I've only used it a couple of times, so this month's regimen that I do will be the test, but so far I am happy with it.