3 SIMPLE DEVICES FOR PREVENTING DEVELOPMENT OF AEDES-AEGYPTI LARVAE IN WATER JARS

We developed three types of covers that are easily fabricated from pla stic screen locally manufactured in Thailand. The covers were designed to permit normal use of water jars for drinking, utility water uses, and water storage. Tests of the covers in the laboratory and field dem onstrated that they could completely prevent successful development of Aedes aegypti (L.) in water jars. Initial experience in a village set ting demonstrated that these devices were readily manufactured and use d in a community-based program. Village residents adapted the covers t o local patterns of water use, collecting rainwater through the screen and adjusting cover use to water depth.