I hunt Hannibal, and Key, Ohio and do well. I killed 4 coyotes in that area this year all with mouth calls. I hunted the early season and used electronic callers but did no good a buddy from across the river in WV. suggest I use mouth calls and my kills went up everywhere I hunted. The open land is not what it used to be with all the new homes add thousands upon thousands of new callers out their blasting all types of sounds it has made it a lot easier to call them with mouth calls. Between WV, OH, and PA. I would bet we gained 50k predator callers the last 10 years. Pa. alone is said to have 1 million hunters alone. They are called the worlds largest army. You cannot get any more realistic than mouth calls. As far as fox you will kill 5 to 10 a year, no matter what sound you are screaming out of a electronic call. Those guys call themselves predator hunters but cannot call in a coyote to save their lives.