True bugs can live almost anywhere in the world and can be found on land or in the water. They can range in size from very small (1 mm), such as bed bugs, to very large (15 cm or 6 inches), like the giant water bug. Most bugs live on land, but many live their entire life in water. Some species are considered semi-aquatic because they live at the edge of water or on the surface of the water, but these insects cannot survive under the water.
Limiting access for household bugs is the best way to prevent an infestation. Seal cracks and holes on the outside of the home including entry points for utilities and pipes. Keep tree branches and shrubbery well-trimmed and away from the house. Keep basements, attics, and crawl spaces well ventilated and dry. Store garbage in sealed containers and dispose of it regularly. Replace weather-stripping and repair loose mortar around basement foundation and windows. Store firewood at least 20 feet away from the house and five inches off the ground. Call a qualified pest professional for additional advice and treatment if necessary.