Can you feed your horse a starburst or laffy taffy?

That sounds like a horrible idea - rewarding your horse for biting by giving him a tasty treat? No way, that would only make things worse. Sure, he might be occupied with getting it out of his teeth for a minute or so, but what do you think he'll do when he wants another one?

But to answer your question, you could give those things to a horse, but you really shouldn't.

Like others said, feeding snacks will encourage more biting. If a horse bites or nips at you, give them a pop on the nose! Show them who is boss, and dont let them get away with that. I knew someone who got a bloody, sore, and bruised hand from a horse like that!

Mmm... giving a horse who bites tasty sugary snacks... now that sounds like a great decision! Please do not believe everything you read on the internet.

Treats encourage nippy horses to bite more. I wouldn't give a biter anything remotely tasty. I don't know whether those candies are safe or not, I just know it's not smart to give them to a biter unless you want to get bitten more.

Maybe he'll spend 20 seconds chewing on the candy, but after that he'll bite you again after he learns that biting you means he gets candy.

Noo! Dont feed him junk. But if he bites, bite back! Okay, not litteraly, but when he bites, show him your not actually scared of him, and keep doing your thing. Just ignore him. But if he keeps it up for a while, call a professional trainer or something.

good luck!