Abstract: An applicator for applying treating material to animals upon activation thereof by an animal includes a base frame formed of a plurality of base members arranged to define a closed geometric figure preferably having three sides and a matching top frame supported above the base frame by a plurality of standards extending therebetween. Treating material applying means are suspended from each of the rail members of the top frame and positioned so that engagement thereof by an animal moving under the respective rail members effects application of treating material to the animal.