Yeah, I've had the suggestion of treating our property, but the chemicals are a no-go, as far as I'm concerned, especially as we have well-water...good, deep, cold well-water!
Guinea Fowl will eat them, but hawks eat the Guinea Fowl, etc.
Chiggers are nasty little (*&$%, aren't they? And, the SCARS that are left on account of the itching!! I look like I had smallpox all around my ankles!