I just remember that most of the time we'd hit the call pretty hard twice with about a half second between the 2 and then follow that up with about 10-12 quick lighter hits. It imitates a squirrel barking like he's just seen something and is sounding off to let all the others know something is going on.

Other times we'd go with about 5-6 slower softer hits on the bellows. That worked too. Good luck. You'll have fun with it. Merry Christmas.