Using Ben is easy. First, fill the removable water tank with water and add your favorite essential oils if you want a scented atmosphere. Then place it in a room of up to 270 square feet. Plug it in and turn it on. You can adjust the humidification level and the intensity of the fireplace effect to your liking. To refill the water tank, you don't need to turn off the device. Just remove the tank and fill it up. If you want to avoid distractions during your relaxation time, you can dim or turn off the water level indicator and the flame effect. When it comes to maintenance, clean the water tank regularly to prevent the growth of bacteria. Wipe the exterior of the device with a soft, dry cloth. Remember, this item has a 30-day return policy if you're not satisfied.