1. Ensure the switch on the diffuser unit is in the OFF position.
2. Insert the refill into the diffuser unit according to the instructions on the unit carton. Ensure you direct the diffuser away from your face at all times.
3. Change the switch from OFF to your desired setting for the area, conditions and protection level required. Refer to the Mortein Automatic Spray Indoor and Outdoor carton label containing the diffuser unit or alternatively, contact the Toll-Free number below. Indoor diffuser settings for Outdoor Use Only.