Continual exposure to a single class of insecticide (e.g. pyrethroids or organophosphates) may lead to the development of resistance to that class of insecticide. In order to reduce the possibility of Buffalo Flies developing resistance it is important to rotate the class of insecticide used on a seasonal basis. Cylence Ultra may be seasonally rotated with ear tags from other insecticide groups like Co-Ral Plus. This Buffalo Fly season protect both flanks with the double tag system – Cylence Ultra and remember to rotate with Co-Ral Plus. Cylence Ultra: Dual tag system spreads the active and protects both flanks Synthetic pyrethroid (SP) – ideal for a seasonal rotation program with the Organophosphate (OP) Co-Ral Plus