Horses are naturally afraid of objects that move and make a noise, something that the plastic bag does both of. Desensitizing your horse to plastic bags will increase his tolerance of strange objects and acceptance of your tools. Remember, your goal as a horse trainer is to desensitize your horse to as many objects that move and make a noise as possible. Many horses are afraid of plastic bags, but by using the Approach and Retreat Method, you can teach your horse to use the thinking side of his brain, rather than just reacting with panic. The more objects that you can desensitize your horse to, the quieter he’ll get and the quicker he will learn to use the thinking side of his brain when he gets scared.