I can not use deet, even in the lower concentrated forms (7%) without raising huge welts on my hide. And the fact that deet melts so many finishes and coverings on equipment makes it less than ideal.
A buddy using deet on his hands pretty well destroyed his brand new custom spinning rod.
I've found that picaridin based sprays work very well for me. Picaridin works for mosquitoes, all kinds of flies, and even keeps the buffalo gnats from landing and biting. And it won't damage any surfaces or finishes. Cameras, guns, clothing, and etc. are safe even under direct spray.
