A device for achieving a controlled low emanation rate of small volumes of liquid solutions, such as single or multi-component solutions, fragrances, or pheromones, for pest and insect management or fragrance enhancement. The device has a housing with an upper chamber to hold a bladder containing desired...http://www.google.es/patents/US7681809?utm_source=gb-gplus-sharePatente US7681809 - Electrochemical dispenser
