Highdesertwolf: Howler is right, If the coyote hears the sound it will most times pinpoint it to within a couple of feet real quick like. Their hearing is very very good. They can hear a lipsqueek at hundreds of yards in high winds. That means any sound.

Mouse squeeks (coaxers) IMO are more the user than the coyote. I have seen alot of guys use them and explain why they use them. In my experiance, either they come or not to any sound. I have a coaxer mouth call and Coaxer on my E-caller, I never use them. Maybe I will start to understand better if they are effective or not.

Something to remember, (hopeing NOT to start a debate) Arizona coyotes in someways are different than Colorado Coyotes. They are conditioned differently, depending on alot of variables. Food source, terrian, human interaction, territories and comfort zones and so-on. How close they may or may not respond COULD depend on how comfortable they are to going to an unknown sitiation(sp?)