Spartan Mosquito Pro Tech kills mosquitoes for up to 30 days so you can enjoy the outdoors. Spartan Mosquito Pro Tech also doesn't require batteries or electricity, just add warm water and shake. 100% American Made. Kills mosquitoes that may carry West Nile Virus, Zika Virus, Chikungunya, Dengue Fever, St. Louis Encephalitis, Western equine encephalitis, Eastern equine encephalitis for up to 30 days. Replace every 30 days. This product has a different ingredient than the original Eradicator does. It is Boron.