Sometimes, the best way to illustrate a point is with images

so let me demonstrate the upside and downside of using treats as bait. Yesterday, my best model and I were out scouting locations for portraits and I was using milkbones because they are the easiest to carry and toss. Here's a shot of Rowdy when he first saw the treat.
Please note that long strand of drool hanging from his tongue. Yes it can be removed in PS but it's a pain.
And, later in the shoot, here's what you can get when you toss the milkbone exactly where you want the dog to look.
In this case, it was over my right shoulder. Treats work well but you have to work around the inevitable drips, mouth wipes, etc.
BTW, technical info on the images: 85mm F1.8 @ F4.0, 1/400 shot RAW no sharpening applied.
Jim