The Pyramid Repel 50% Deet Spray is a powerful insect repellent designed for use in extreme conditions, where the user is at risk of insect borne diseases such as Malaria or West Nile Virus. The 60ml bottle lasts up to 6 hours with one full body spray, providing an effective shield against Mosquitos, midges, stable flies, black flies, deer flies, ticks and chiggers.