The Biom Diffuser can be used in any room of the home or office to bring good bacteria into your indoor spaces. The compact diffuser uses ultrasonic technology to create a fine, dry mist of probiotics. The mist is released automatically at a set time interval. Biom Diffuser kits come with a base unit with all the mounting hardware, 2 x 100mL probiotic liquid refills, and a USB charging cable. Each refill lasts for several months depending on setting used, and can be used with or without wall mounting.