Each tag includes a male button for attachment. PYthon® is a powerful pyrethroid tag containing a unique, synergized formulation of 10% zeta-cypermethrin and 20% piperonyl butoxide. PYthon provides rapid, almost immediate pest knockdown .At one tag per head, PYthon® controls horn flies for 3 to 4 months and up to 5months with two tags per head. Ideal for rotation with WARRIOR™ or other organophosphate tags to manage horn fly resistance to insecticides.