Systems to create and maintain pre-designed geometrically shaped volumes of an effective dynamic mixture of volatile compounds encompassing an object of protection for very long times, up to one or more years, for control of pests and pest-borne diseases in open outdoor environments of importance to humans, animals and plants. The systems include a plurality of passive flow control nozzles containing mass-regulating barriers with retaining fixtures, strategically positioned and uniquely oriented, connected to volatile compound-storage structures with replenishing connectors, for delivering controlled release of volatile compounds using individual passive flow control nozzles that dispense volatile compounds at continuous, predetermined, substantially constant and sustainable release rates over extended periods of time; appurtenances to protect the mass-regulating barriers while in operation; and sensors to monitor the biologically active threshold and the concentrations of volatile compound within the pre-designed geometrically shaped volumes of volatile compounds.