Footbaths and Vehicle Disinfection (Biosecurity)

Footbaths and vehicle disinfection are the perimeter controls that keep pathogens from entering a farm on boots, equipment, and vehicles. Footbaths at every tank room and zone boundary should contain a verified disinfectant solution, commonly 1–2% iodophor, 0.5–1% quaternary ammonium compound, or 200–500 ppm peracetic acid, refreshed at least daily or whenever visibly soiled, because organic matter rapidly inactivates most disinfectants. Effective use means a wet contact time of at least 30–60 seconds per crossing and scrubbing of boot soles; dipping for two seconds in a dirty bath is biosecurity theatre. Vehicle disinfection stations at farm entry use spray arches or manual lance application of 1–2% disinfectant solution at roughly 1–2 L/m² over wheels, wheel arches, and underbody, with a minimum 10-minute contact time before the vehicle proceeds; wheels deserve special attention because they contact manure, sludge, and wild-fish water on public roads. Protocols must define which events trigger full disinfection (new deliveries, harvest trucks, visiting veterinarians) versus routine traffic, and keep a log of every application with concentration checks by test strips. In high-health hatcheries, changing outer clothing and hand disinfection precede any footbath. These controls are cheap, but their value collapses if puddles, bypass routes, or shared equipment allow uncontrolled movement between zones.