Pests can damage plants and trees in gardens or damage homes or other structures. They can also impact the health of people and their pets. Pests may spread pathogens that can cause serious, life-altering, and even fatal disease. Some diseases transmitted by pests include West Nile virus spread by mosquitoes, Lyme disease by ticks, and hantavirus by deer mice. Other pests bite or sting triggering allergic reactions, which for some people can be life-threatening. Learn how to control and prevent health risks associated with the following pests.