Come on down here if you miss the chiggers. I got several bites on my ankles yesterday and was itching all night. Surprised me because I didn't really go into any brush, just wandering around the woods out back on the trails. I always wear permethrin treated clothes and socks also, but it's been about a month. Gotta get out the Sawyers and douse the clothes down again. I think the chiggers are here to stay, there is certainly no frost threatening them in the forecast.
As for ticks, I almost never see them after August. I'm sure I could find them if I went through heavy brush, but with permethrin and common sense, they just aren't an issue for me.