My last two bowkill bucks were both called in blind. One with a grunt/roar and the otherwith a rattlebag/grunt/wheezeand are my two biggest to date. I'd have to say with all the success I've had over the years with calls that I'm a firm believer in their effectiveness but that being said, there are tons of variables that affect the success whencalling. Time of year, phase of rut, deer population/B to D ratio, volume of call, type of call, how many times you've used said call, etc, etc, etc. A call used wrong will do more harm to the huntthan not calling at all.