Depends on the horse. If the horse isn't very food oriented, then it doesn't matter how many you give, the horse won't really try to maul you. Now, if the horse is like my guy, who is confident in himself and around people and is food oriented, then I only give them out when he comes to me at the gate when I call him (sometimes), and when he gives me extra effort or offers something unexpected. If you hand out treats to these kinds of horses for no reason, they become treat ****s and basically say to you "Hand over the treats and no one gets hurt!" lol. Then you run into issues like them pushing into you, mauling you, etc.