They are definitely coming in on a call now. I guess the fox pro was just overused in the area? My cheap hand call has them screaming in.101stCurrahee , If you would like to see how some coyote respond to the call in Wyoming you can watch Powder River Predators long range coyote dvd . they aren't professional videogrifers but do have some good footage of coyote behavior around Gillett Wy. spring summer fall and winter as well as some of the calls they use .