Unscrew and Insert: Twist off the cap of the green liquid bottle and screw it securely into the electric diffuser heater unit (step 1).
Plug In: Plug the assembled device directly into a standard 110V–220V wall electrical outlet in an upright position (step 2).
Activate: Turn on the power switch if your unit has one to release the repellent vapor for a mosquito-free environment (step 3).