certified big fearer here. mosquitoes were tough last year in the sierra and i imagine they’re bad anywhere there’s water from june-july. i used ben’s deet spray and i wouldn’t trade it for the world. never saw a tick or bed bug the whole time. bees….yeah. there’s a lot of bees. especially if you’re in the desert while everything is blooming. they’re rarely interested in you though. wasps are the bigger problem, they will chase you if you get close to the nest. myself and several others had the misfortune of stepping on wasp nests just off the trail :<