Orillia Ontario Area and Black Flies

With the unusually cold, wet spring we've had this year I'd say you'll get eaten alive, perhaps not as much by black flies but certainly by mossies. The further north one goes the worse it seems to get and last time we camped at Arrowhead in late June a few years ago I had to go into Huntsville to buy a screen room as there was just no way we could sit outside and survive without it. I learned from that experience and leave any trips much north of Parry Sound to later in the season. Orillia isn't quite as far north but if you're not convinced listen to this.