What is the best tick repellent for humans, you ask? Well, have you heard of Permethrin spray? When it comes to repelling ticks, avoiding Lyme Disease, and buying tick repellents... we recently learned a little secret from the U.S. Military. It's called Permethrin! If it's good enough for the Department of Defense, then it's good enough for us. Here's why we use Permethrin anytime we go in the woods now. By the way, it repels both ticks AND mosquitoes... far better than DEET-based products do.What is the best tick repellent for humans, you ask? Well, have you heard of Permethrin spray? When it comes to repelling ticks, avoiding Lyme Disease, and buying tick repellents... we recently learned a little secret from the U.S. Military. It's called Permethrin! If it's good enough for the Department of Defense, then it's good enough for us. Here's why we use Permethrin anytime we go in the woods now. By the way, it repels both ticks AND mosquitoes... far better than DEET-based products do.