I called a yote up the back door last weekend with just my voice and a cupped hand. The dawg doubled back on the fox trail that it was in trot pursue of on the first squeak. I barked and yipped a few times he stopped each time. It just couldn't peg me with my wind; it hit the brushy fence line and melted away. Hour later the zig zag line of dots in the new snow let me know that it had not melted away but got a fair bit more perspective on the situation, but the fox made it through the morning at least and I saved a few bucks in calls. It was a nice two dawg morning ;)