Heath Purple Martin Door Stops : 12ct Species_Large Animal This product contains an insect

This product contains an insect growth regulator which prevents the development of house flies and stable flies in the manure of treated horses

especially in thick eared animals due to a longer tag anchor

Each pelleted implant dose contains a combination of immediate release (IR) and programmed release (PR) antigen pellets

Please know that while the safety bulb was designed to resist insertion  into the trachea

Heath Purple Martin Door Stops : 12ct Species_Large Animal This product contains an insectHeath Manufacturing Company Door Stops prevent pesky intruders from commandeering your purple martin houses. When martins migrate and leave their houses unoccupied, other birds are just waiting to move in. If this happens, it could cost you your martins for good, since they like to return to the same housing year after year. Now, all you need to do is place this set of 12 round, green door stops over the entrances to your Heath purple martin houses to