The Compu-Spray mosquito controller provides protection from mosquitoes, gnats, and black flies by emitting a 30 second spray of a 2% Malathion mixture. The Compu Spray is a self-contained unit that requires only two 6-volt lantern batteries as its power supply. Mounted on a 10' high post, the sprayer unit is raised and lowered (for filling) using the included pulley system. There is a six-way wind sensor on the bottom of the unit which senses when to emit the fine mist spray. The computation in the Compu-Spray ensures that the insecticide is only emitted once per wind direction per 12 hour interval.