Worse than gnats, the mosquito swarms.
I was camping on Lake Havasu; thought it was great. Hot out, I went for a quick dip then forgot to reapply the deet. OOPS. Too lazy to pitch the tent, I setup my sleeping bag (to sleep ON, not IN, in the hot weather) in the bed of the truck, which has a Snugtop shell. Well, a swarm of mosquitos got into the back along with me. They were everywhere. I must have smashed 30 against the windows before declaring the back mostly safe. It looked like a crime scene in there, little blood blobs all over the windows. By morning I was covered in itchy read bumps. Everywhere. Never been back to Havasu.
I don't have the pleasure of gnats on my commutes. But I don't have the pleasure of any nature at all on my commute. Just the Los Angeles river in it's concreted glory. However, if I did, I would wear those arm coolers at the very least, and a mosquito net for sure over the helmet. I do wear a light weight material bandana around my mouth when MTBing in the spring and fall and when I vacation where there are lots of bugs. The thought of getting them in my mouth or nose is just too much. I would rather look like a dork in a bug net.
Tzvia- rollin' slow...
Specialized Ruby Expert/mens Bontrager Inform RXL
Specialized SWorks Safire/mens Bontrager Inform RL
Giant Anthem-W XT-XTR/mens Bontrager Inform RXL
Fuji Newest 3 commuter/mens Bontrager Inform RL
Novara E.T.A commuter/mens Bontrager Inform RL