On August 23, the Federal Emergency Management Agency (FEMA) deployed 717 personnel, mainly from the disaster response team, to the affected regions in the United States.[35] The following day, 564 National Guard troops were deployed in the state.[29] In the days following the storm, many mosquitoes and other insects laid eggs in areas of standing water, causing a large increase in their numbers. Authorities sprayed insecticide to minimize the potential for disease outbreaks.[36] By August 25, all shelters opened prior to Bret were closed as residents were allowed to return home.[37] On August 26, President Bill Clinton added the counties of Brooks, Duval, Jim Wells and Webb to the major disaster declaration area. This allowed residents in those counties to receive federal funding.[38]