The aroma of cedar is lethal to non-beneficial insects and snakes, which are driven by pheromone (odor) and heat stimuli. Cedar Oil interferes with the ability of the insect's octopamine neuro receptors to detect food, mates and reproduction habitats. When comfort levels are destroyed, insects become overwhelmed and relocate to areas of concentration where sight driven predators such as birds, lizards and beneficial insects will control infestations. Insect displacement interrupts the "egg layer cycle", eliminating a new generation. Continued use of this product will create a barrier of re-entry, leaving an insect free landscape or structure. The aroma of Cedar Oil to an insect or venomous snake mirrors that of ammonia to a human.