• Repels & kills ticks, mosquitos, chiggers, black flies, fleas and bed bugs • BioShield™ is powered by NeuroRX™, developed by pharmacists with prescription strength results and is a proprietary formula of Portland Outdoors™ • NeuroRX™ works by attacking a neurotransmitter found only in insects which controls heart rate and metabolism • Fleas, ticks, mosquitoes and bed bugs produce a neurotransmitter called octopamine, NeuroRX™ blocks the octopamine, causing a complete shutdown of the central nervous system killing insects nearly instantaneously • Octopamine is found only in insects, humans and other mammals, birds and fish do not produce octopamine • NeuroRX™ is safe to use around children and pets but is deadly to insects when used as directed • Deet free • Lasts 8 hours • 8 fl. oz. spray • Proudly made in the USA