Mosquito Shield incorporated over 15 years ago in Massachusetts. By researching the science behind the life cycle of the mosquito, an proprietary spray was developed that lasts for weeks and grows in strength as the season progresses, creating a strong barrier around your property. Our Mosquito Protection Blend (MPB) spray is comprised 100% of natural oils which, when combined with select control materials, kills mosquitoes on contact, masks your CO2 (which attracts mosquitoes) and repels mosquitoes away from your property. Rain Shield is also included to allow the spray to last through moderate rain conditions. The spray adheres to vegetation, wood, stone/brick and other organic materials.