Hi, it doesn't matter what county you hunt in, it does matter of, its a populated area.
Like it was posted, they have to be within hearing distance.
as far as sents, don't use Skunk

, (they spray when there is a problem), Fox glan smells alot like Skunk!!!
I use Raccoon, Coyotes are not scared off, and it is a good cover up, on your down wind side, it lets, you even use what ever call you want, without alarming the CoYote.