The Mr. Squirrel whistle is great for locating them, gets them all torn up and squacking. That way you can know where they are and put a stalk on them.
As to calling them to you, I am not sure how successful that is in general. I do know that I had one practically run over me one time while I was using a turkey call. I had been watching a squirrel in a tree for several minutes and then began with the turkey call. The squirrel was probably 60 yards away. It left the tree in a hurry, and ran on the ground fast to get to me. I basically kicked it off with my foot.
I have heard others mention using a turkey call for squirrels too, but I have a feeling that it isn't always a sure thing. I am not aware that squirrels can be called with any consistency. If they can be then I would like to hear too.
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