As to calls......The most effective one I have is a whistle; it's hollow and about the size of a quarter with a hole through it. You probably know what I am talking about. Anyway, though not always, it can be very effective. I've had them come out of holes to check out the sound. It has also attracted the occasional curious crow. Have also used it at times when it made no difference at all. Have used the baffle call, but have yet to call a squirrel with it. All that said, when I got my 3 squirrels this week, I did not use the call. The beat is to go out on a crisp, calm, cool morning when the sun is shining, especially after a windy, rainy, chilly day and the squirrels will be everywhere. That's what works in Kansas.