Blacklegged Tick, Lone Star Tick, and American Dog Tick (image) Entomological Society of America Share Print E-Mail Caption In a series of experiments conducted by researchers at the US Centers for Disease Control and Prevention, clothing treated with an insecticide known as permethrin had strong toxic effects on three primary species of ticks known to spread disease-causing pathogens in the United States (shown here, left to right): the blacklegged tick (Ixodes scapularis), lone star tick (Amblyomma americanum), and American dog tick (Dermacentor variabilis). Exposure to permethrin interfered with the ticks' ability to move properly, making them sluggish and likely interfering with their ability to bite. Credit CDC Public Health Image Library Usage Restrictions Maintain attribution Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.