In reply to pasbury:
I know Dan is working on a review currently, so don't want to put words into his mouth, but here's a few initial impressions from my perspective:
Having given this a spin on Skye the other week when the midges were probably 8/10 (i.e impossible to be around without a headnet, with plumes/clouds of them forming around you), I can honestly say that there was no way that this device was ever going to stop them in their tracks - there were simply too many. It was the same sort of conditions that Smidge and DEET have zero impact too, because it's not necessarily about the biting - it's the sheer number of them swarming around you (it was so bad Dan had a coughing fit from inhaling too many).
What I'd be interested to see is how it performs when conditions are a little less severe, say 4-6/10, as I can see that being more realistic. When you get to 8-10/10 you're basically resigned to running away, hiding, or just accepting the end of days and giving in to it all.
Be interested to see how Dan get's on throughout the rest of the summer. Bet he's relishing the thought of getting out in those midgy conditions