Most horses don’t like it when we try to stick something in their mouth. However, with some good horsemanship, it’s pretty easy to learn how to deworm a horse without a fight. If you’d rather watch a video on how to give a horse dewormer, there’s one at the top of this page.

Dewormer – My approach, like everything I do with horses, is to…

  1. Break it down into steps so the horse can more easily understand.
  2. Make what I want the horse to do the easy thing and make doing the opposite more difficult.

Let’s start with breaking it down into steps.

Don’t abruptly try to poke the horse dewormer syringe into his mouth. First, rub it all around on his face. Wait until he gets ok with that. Next, you would start rubbing the syringe on the edge of his mouth. Then make smaller and smaller advances until the syringe is solidly inside his mouth.

Make The Right Thing Easy

Now, if at any time during this process the horse fights the dewormer syringe, make that difficult. For instance, if he tries to raise his head and get away from it, bump the halter. This makes him run into some pressure. In no time, he will realize that the best deal is to stand there quietly and accept the horse dewormer syringe. Now, like everything with horses, you have to make sure your timing is correct when doing this.

Note: This will all be a lot easier, if your horse has already been taught to lower his head. I’ve got several videos on how to do this included with the Buckaroo Crew.

Make sure that you’re not bumping the halter when he’s not fighting you, and that you’re immediately releasing all the pressure as soon as you see positive change. Note that a positive change doesn’t mean he does exactly what you want. It means that he made a good, subtle change from what he had been doing before. It’s imperative that he’s rewarded for his try.


Carson James
Carson James

Carson James' background is in Vaquero Horsemanship, and for the majority of his career, he worked on cattle ranches where he rode horses all day, every day. His knowledge comes from real life experience using traditional Buckaroo horsemanship to train horses and fix problems. He is now taking all of this knowledge and experience and sharing it with horse owners through his blog, his Insider list, and his Buckaroo Crew. He has a unique way of breaking things down where they're easy to understand, both for the horse and the human.