Public Health (8) and Regulatory Pest Control (9)
Public Health (8)
Mosquitoes, ticks, rodents, and vectors
Public health pest control protects people from disease vectors and nuisance pests, usually under a city, county, or health department program.
Mosquito programs. Integrated management starts with source reduction - dumping standing water, clearing drains, managing catch basins - then larvicides (Bti, methoprene, spinosad) before adulticides. Adulticiding is ultra-low-volume work done at dusk or night when mosquitoes are flying and bees are not, and it is the least efficient tool, used when surveillance shows disease activity.
Surveillance and resistance. Counts and trap data drive decisions; rotating adulticide chemistry slows resistance. Some products carry NPDES permit obligations when applied over or near water.
Rodents and ticks. Rodent control in sewers and rights-of-way uses baiting with careful placement; ticks are managed by habitat modification and area treatments. Recognize plague, tularemia, and hantavirus risks when handling rodents.
Notifications and records. Many programs notify beekeepers, schools, and residents before spraying. Keep application records and equipment calibration data.
Traps. Applying an adulticide during the heat of day when bees are foraging; assuming a fogging product is legal over water; and treating without surveillance data to justify it.
Worked example. West Nile virus is detected in a trap pool. Respond with source reduction and larviciding in the catch basins around the positive site, then an evening ULV adulticide pass if counts remain high, after notifying registered beekeepers.
Regulatory Pest Control (9)
Government programs and quarantines
Regulatory pest control is pesticide work performed by or for government to enforce quarantines, eradicate introduced pests, or suppress outbreak populations - grasshopper and Mormon cricket programs, noxious weed enforcement, boll weevil eradication, and invasive species response.
Who applies. Federal, state, county, and municipal employees, and contractors working under their direction. Many of these applicators hold a specific certification tied to the agency. Understand the difference between a private applicator certificate and a government or commercial credential, and know that applying a restricted-use pesticide on public land still requires certification.
Program concepts. Quarantine areas restrict movement of infested materials. Eradication aims at zero; suppression aims at reducing damage. Noxious weed law allows authorities to compel control on private land and to recover costs. Endangered species consultations, tribal land coordination, and public notification are part of planning.
Records and reporting. Programs require treatment records, acreage summaries, and reporting to the sponsoring agency. Equipment calibration and product accountability are audited.
Traps. Assuming a label's agricultural directions authorize use on rangeland or public land; forgetting that state and federal permits may be required beyond certification; and treating a Threatened or Endangered species habitat without consultation.
Worked example. A county plans a road-corridor grasshopper spray under an APHIS program. The plan must confirm the labeled site and rate, check for endangered species and nearby apiaries, notify the public, and file treatment records with the agency.