Pest Control in Harris County, TX

Harris County sits in Texas Gulf Coast, the humid coastal plain along the Gulf of Mexico. The county is home to roughly 5,045,026 residents, with Houston as its county seat. 278 licensed pest control companies registered with the Texas Department of Agriculture serve Harris County, averaging 4.7 stars across 139,750 customer reviews.

Highest-rated in Harris County: A-Action Home Inspection Houston — 5★ across 2,508 reviews.

Pest Pressure in Harris County

The Gulf Coast is one of the most pest-active regions in Texas. Year-round humidity, mild winters, and high water tables keep insects breeding through seasons that would knock back populations inland, and tropical storms periodically flood low ground, displacing rodents and triggering mosquito hatches in the weeks that follow.

• Subterranean and Formosan termites — high soil moisture and warm ground sustain aggressive year-round colonies; the invasive Formosan termite is well established across the coast.
• Mosquitoes — standing water in coastal flats, drainage ditches, and post-storm flooding produces near-continuous breeding, including salt-marsh species.
• American cockroaches — warm, damp crawlspaces, storm sewers, and aging infrastructure are ideal habitat.
• Roof and Norway rats — ports, warehouses, and dense restaurant districts sustain persistent rodent populations.

Pressure runs high nearly year-round, peaking from late spring through fall when heat and humidity compound and termite swarms emerge after spring rains.