The Prozap Bovi-Rub is a hanging back rubber built to deliver insecticide to cattle and other livestock through simple wicking action as animals rub against it. It is suspended near water troughs, mineral feeders, or in alleyways where livestock pass regularly, encouraging repeated self-application without extra handling. Owners fill the rub with a chosen insecticide solution, which the wicking material absorbs and transfers onto the animal's hide and back during contact. The unit is designed to be recharged as the solution is used up, keeping it effective across a treatment season. End loops allow it to be anchored to posts, gates, or fence lines for stable hanging. It is intended for use with properly labeled insecticide products rather than sold pre-treated.