Livestock insect-removal systems and methods. According to one embodiment, the system may comprise a structure with a defined path for passage of livestock. The system may comprise a container removably attached to the structure and a vacuum device within the container configured to generate a change in pressure within the container. The system may comprise a first duct to expel air from the container and direct air across the path and displace or dislodge insects. The first duct may further comprise a vent to expel bypass air from the first duct. The system may comprise a second duct, positioned along the path to draw air and dislodged insects into the container.