Carrollton is entirely urban, so insects and rodents find food and shelter in the same houses, shopping strips and drainage lines that people use. Humid subtropical weather keeps them active for most of the year.
Carrollton is home to 133,434 people according to the 2020 census, spread across 37 square miles at an elevation of 482 feet. The city lies in parts of three counties, Dallas, Denton and Collin, and DFW International Airport is about 5 miles to the southwest. Interstate 35E, the President George Bush Turnpike and the DART Green Line all cross it.
The city is entirely urban, and the water that does exist, such as Josey Ranch Lake, sits inside neighborhoods. July is the warmest month, and May brings the most rain on average. Heat, rain and a dense layer of buildings and storm drains make steady conditions for roaches, ants, mosquitoes and wood-eating insects.