The Spartan Mosquito Eradicator is a uniquely effective, long-lasting, continuous mosquito control product. Spartan Mosquito Eradicators do not require batteries or electricity, just water! Easy to install — Hang along the property perimeter approximately six feet off the ground from a tree branch close to the trunk, within 180 feet of each other. Do not require power — Just add warm water and shake. Provide continuous, long range protection. Minimal maintenance — Maintain water level and replace at least every 90 days. Are extremely effective — Significantly decreases population in about 15 days. Provides up to 95% mosquito control for up to 90 days.