DEET is really strong stuff. It dissolves paint and labels from cameras, and makes hiking pole handles sticky. So wash the hands after using it!
Day-am -- this really caught my attention!
Reflecting on the terms "natural" or "naturally occurring" is always funny to me, because some of the most deadly neurotoxins occur "naturally" in nature!
Sorry. Drifting off-topic. My only comment about being in the Sierra at the end of July is that you are almost guaranteed some kind of crazy weather: Hail, downpour, snow, lightning -- all of the above. I bet that the best replenishment of the watershed takes place at this time.
