Alexandria’s humid climate and dense urban environment support pests such as rodents, cockroaches, ants, termites, and mosquitoes. Older historic buildings are especially vulnerable to termite infestations and rodent entry points. High population density and restaurant activity increase cockroach and rodent pressure. Proximity to the Potomac River and storm drainage systems contributes to mosquito activity during warmer months. Regular pest management is important to protect residential, commercial, and historic properties.