Buck off nuisance insects with this completely natural rub on insect repellent. We have horses too and find that using a spray repellent on a cloth and wiping it on their faces is not only messy but it is a huge waste of product that gets soaked up in the cloth. Buck Off! is a balm that is loaded with insect repelling essential oils in a hard butter base to help stay active even when it rains. You won't have to apply it every day.