Abstract: An insecticide dispenser that has a safety device such that when there is a loss of power, the inlet and outlet ports of the dispenser are shut to prevent loss of insecticide. A heater is positioned in the dispenser near the air inlet port to heat the incoming air before it comes in contact with the insecticide. The dispenser has a test mechanism to test the dispenser and insure it is working properly. The timer of the dispenser allows for setting a start time and a period of time that the dispenser is active.

Abstract: The dispenser has a fan and an insecticide in its cavity. Upon control signals from a controller in the "in use" mode, the fan is started and shutters provided at an inlet and outlet are opened, while in the "not in use" mode, the fan is stopped and the shutters are closed. When one of the individual timers is selected, the controller issues control signals at times specified by the individual timers within a time period previously specified by the main timer. When the dispenser is in the "not in use" mode, the shutter isolates the cavity from the outside.

Abstract: This invention discloses a volatile insecticide emitter having the construction wherein volatile insecticidal plates each formed by impregnating a plastic absorber with dimethyl dichlorovinylphosphate as an insecticidal component are juxtaposed in an inner space of a box-shaped container, an air filter is disposed at one of the air holes of the container communicating the inner space with the outside of the container and a motor fan is disposed at the other of the air holes so that the insecticide emitted inside the container is compulsively emitted outside the container.