| Vectra 3d For Large Dogs 55-88lbs 6 Doses. "Vectra 3D is a fast-acting, multi-spectrum treatment. The spot-on formula treats and prevents flea infestations, kills and repels ticks, and protects against mosquitoes, sand flies, and stable flies."... - Vectra 3d For Large Dogs 55-88lbs 6 Doses. |