For me, the balance is between getting their attention and controlling the drooling. So I tend to stick with the milkbones.
But you use whatever works. Sometimes it's hotdogs; sometimes it's string cheese; sometimes it's a bit of sliced turkey. I like to stick with toys and noise-makers whenever possible again to keep the mouths as dry as I can. Once you start a Rottie drooling, you might as well bring out the towels

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My advice is always to try stuff and see what works. You'll eventually find the right mix for you and the animals you shoot.
Jim