This is interesting! All these different methods. I've seen it taught three ways. All positive. I can't see the videos so apologize if repeating anything.
First way, food scattered on the ground, better food in hand. Use the heel command to walk through the food with the dog, tell the dog to leave it and give the higher value treat for doing so. Using voice (happy) and relationship are key in this method and since Bella was not food motivated at the time, she had no problem with her and this method. My other dogs would have had a harder time.
Second way, in our therapy dog/CGC class, they would line up 3 leave it items-starting with three really low value items that dogs really don't care about. And just walk past telling them to leave it, good leave it, treat. Each class the leave it items got more interesting-including a piece of kleenex, McDonald's, moving toys at the end. But since the dogs were building up, the better distractions didn't phase them as they had already learned the leave it with such low value items. This was with Ava and she's much more into food, kleenex, etc. It really set her up to succeed.
Third way, this was Bella again, and in an advanced class (she won the Leave It competition
on the last day of class) the item was food, and as the dog went to get it, you would take your treat and lure the dog's nose toward you with it so that-and this is what I loved-not only were they leaving it they learned to look to you as soon as you said the words leave it. So it became, as the behavior got shaped, the command leave it-dog looks up at you-treat. So now not only are they leaving it, they are focused on you.
So I combine methods-I use the really low value items to start, and lure with good treat to get them to look at me. Then we work on higher values and treat gauntlets.
I want my leave its to be rock solid. Ilsa and Bruno were playing catch with a rabbit that had unfortunately wiggled into the yard-I yelled out leave it and they ran to me for their better treat. Bruno is a rodent hunter by nature (Schip mix) and Ilsa has high prey drive. So the positive really works even on these guys.
-I always train it positively.
-They never get the leave it item.
-We have fun with it-we play leave it games from time to time.
-A correction for leave it is-once the behavior is trained and truly learned-does happen if the dog makes a mistake-but they are good about it (Mario needs some work, I will admit).
Our leave it item the other night:
Ilsa and Mario followed me while I helped the toad leave the fenced yard-so it was very tempting to them-but they didn't touch it. Even Mario!