insect repellant

How many times have you watched a game or tournament and the only thing you recall years later were the flies and mosquitoes?

I can remember coaching many a Memorial Day soccer tournament, and mostly what I recall were the black flies that always seemed to hatch at the same time (Is it just me or does it seem that many athletic fields are built close to swamps?) Not to mention the bites I got from those nasty green heads when I was trying to sunbathe on the sandy beach where I grew up in Massachusetts.