Pest Control When a pest is capable of impacting human health, controlling that pest becomes a community concern. Our Vector Control program monitors pests such as mosquitoes that can transmit or "vector" diseases. Mosquito Control THD works to control mosquito populations during warm months, typically May through September. Bed Bugs Get information on bed bugs and treatment options. Ticks Ticks are abundant in Oklahoma and commonly feed on humans and other animals. Learn how to prevent tick bites which can transmit tick-borne diseases. Rodent Control If you suspect a rodent problem, the THD Rodent Abatement Program can help. Cockroaches As housing inspectors, THD assists tenants and landlords to educate on preventing harborage conditions as well as review the importance of pest control.