Waco sits on the Brazos River halfway between Dallas and Austin, with Lake Waco on its western edge and more than a tenth of the city under water. Old neighborhoods, a big campus and two rivers set the pest calendar.
Waco is the McLennan County seat with 138,486 residents at the 2020 census. The Bosque joins the Brazos here, at the spot where mammoth bones surfaced in 1978, and a seven-mile riverwalk runs from the Baylor University campus past the 1870 suspension bridge to Cameron Park, 416 acres of wooded bluff. Baylor moved to town in 1886, the 22-story ALICO Building went up in 1910, and a 1953 tornado that killed 114 people forced part of downtown to rebuild.
The mix matters for pests. Waco has 58,107 housing units, about a tenth of them vacant, and the streets near downtown, Castle Heights and the campus date to the era of the ALICO Building. Striped bark scorpions, the one scorpion found across eastern Texas and a regular Central Texas house guest, climb old walls into attics. Native subterranean termites work the older lumber, and Culex mosquitoes breeding along the rivers gave McLennan County 44 West Nile cases in 2012. McLennan is absent from the Texas A&M AgriLife Extension roster of Formosan termite counties.