I have one. It is very easy to use and sounds real good.

When I'm not seeing deer, I will occassionally throw out 1-3 bleats. Sometimes every half hour, sometimes on the hour. It varies depending on how slow the day is. If I see a deer, I'll give it just one bleat. It seems to have worked on a group of does I saw on openning day of bow this year.

Have not had a buck respond to it from my blind calling.

-Mike