If you need more than a quick touch-up, you will be impressed with our Preval Energy Disbursement Unit (EDU). The EDU delivers a long-lasting, continuous spray from each of our 150 Feet of Energy units by increasing the liquid mass of each pressurized can. Our EDU system, when filled about halfway with water, insulates our 150 Feet of Energy units and keeps our aerosols working at a consistent temperature to deliver a longer-lasting, more continuous spray. This innovation gives you five times the spray duration than when using the 150 Feet of Energy alone.