Hi, I used a foxpro wildfire, the first big male came in with a baby cottontail sound, did not take him long to respond at all. The second one came in on coyote pup sounds after trying various other calls. The 3rd coyote I jumped while walking to my 3rd stand. He ran then stopped to try and figure out what spooked him, he only gave me a head shot, so, that's where he got it. lol. I have got a lot of good responses to the coyote pup sounds after trying 1 or 2 other sounds first, even when pups are not out of the den or even born yet. Thank you for the inquiry.