Take off the top cover and inner tank lid of the diffuser to open up the water reservoir inside the unit.
Fill the exposed reservoir with water (preferably filtered) using a measuring cup or similar so it fills up the reservoir anywhere before the max fill line.
Add Essential Oil
Add a few drops (6-12) of your preferred essential oil aroma(s) into the water and give it a good stir with your finger to disperse the oil evenly across the surface.
Close the Unit
Put the inner tank lid and top cover back on the diffuser to close it off. Make sure the top cover is snugly on the unit in order to seal the airflow for the mist to form.
Power it On
Use the EVO smartphone app or press the Mist button on the front of the unit to let your aromas flow. You may also connect your diffuser with Google Home or Amazon Alexa for voice recognition use.
Note: It may take 5-10 minutes for the mist to reach its fullest strength, so be patient!