I use the sound successfully often. I use both a Faulk's handcall, and, the Grey Squirrel Distress on my FX3. Both work well. Here in the Ozark timber we usually have a lot of squirrels. While deer hunting I have witnessed on two different occasions coyotes chasing squirrels. I've scraped through a lot of coyote poop and have seen the little squirrel claws mixed in. Some years when we have huge bumper crops of squirrels I've seen the coyotes crap be nearly all little squirrel claws. The sound isn't my No. 1, but it is a usable sound to put in the mix occasionally.