A pest eradicator is a person who specializes in eliminating pests, such as insects, rodents, and other animals that can cause damage to property or spread disease. The term 'swatter' is often used to describe someone who is skilled at this job, as it implies the use of a tool to swat away the pests. Swatting is a common method of pest control, and a pest eradicator may use a variety of tools to get rid of pests, including traps, sprays, and other methods.