It can be in bursts which allows you to control how much scent is released at one time. Or, it can be dispensed all at one time,filling the entire hunting area with the EverCalm Scent. The nozzle atomizes the EverCalm as it is released into the hunting area. Atomizing allows the EverCalm to stick to vegetation in the enviroment so you can leave an active scent trail. 3.5 oz Aerosol can.