Shoulda, coulda, woulda taken it in shortly after we started tobi, shortly after we purchased the pari. At the time we assumed that tobi was just supposed to take that long, until last year when DH's cousin gave us their daughter's old pulmoaid (had asthma), for use at the inlaws. Noticed a significant difference in treatment times then, so I bought a new devillbiss online.
BTW, just read there's a new proneb ultra 2 coming down the pipe. Liza aka ratatosk.