I'm been doing a lot of canyons the past month and one thing they all have in common is LOTS of bugs!
Cedar Mesa - Bugs!
Robbers Roost - Bugs!
San Rafael Swell - Bugs
Moab - Bugs!
Escalante - Bugs!
The weather this year has really screwed up the bug population. Bugs are really bad where I've never had problems before. Bugs are bad at times of the year I've never had problems before.
So far this year I feel like a giant bug sandwich! As I'm sitting here typing this I'm trying not to scratch at least a dozen bug bites from canyons on Friday and Saturday.
YMMV