Howdy Bamb - Try this:

Spray that stuff only on the underside of the cap bill - keeps the critters out of your face most of the time. When they get REALLY desperate, I use a Buzz-Off bandana and pull it up over my nose. Deet makes me nauseous, so I avoid it at all costs. Another really good product I've found is Cutter Advanced Sport containing Picaridin (got it at Wally World). Really works well for me and doesn't mess up your fly lines or waders.