US Patent 7472849 Larvicide dispenser

A device for an operator sitting in the driver's seat of a vehicle to deposit a quantity of material at a target location on the ground adjacent the passenger side of the vehicle, from a hopper having a discharge aperture and a valve for selectively opening and closing the discharge aperture. The hopper is removably mountable to the passenger side of the vehicle. A discharge tube is operatively associated with the hopper discharge aperture and extends from the hopper, for receiving material from the hopper and discharging the material substantially at ground level adjacent the passenger side of the vehicle. A controller within reach of the driver and operatively associated with the valve permits opening and closing the valve and thereby selectively depositing a controlled quantity of granular material.