Y-tex - SwineGuard Pour-on is the only ready-to-use oil based permethrin pour-on formulation for swine. SwineGuard Pour-on for swine rapidly controls mange mites (Sarcoptes scabiei), and lice and aids in control of biting and nuisance flies. SwineGuard is ideal for winter application because the small dose of oil-based liquid, does not chill animals like water-based whole body sprays. This means improved pig weight gains and sow productivity throughout the year. In addition , there are no label contraindications so it can be used in conjunction with other treatments and medications. 1 pint treats 32 swine (500 lb. & over), 1 gallon treats 252 swine (500 lb. & over).