I use the tweety for normal calling situations with great luck. The only time I pull out the psyco is if for some reason I have a fox come in and it spooks, I switch to it and sometimes it will come back in with that one. I have even shot a fox once but it took off running, ran about 150 yards out in the field,switched to the psyco and it was just weird enough to make him stop and look back at me to finish him. Be warned...........it will make every farm dog in the neighborhood go crazy!!