(Bayer) Cylence Guard insecticide cattle ear tags are fifth generation pyrethroid tags that contain 15% beta-cyfluthrin. Approved for use on beef cattle and dairy cattle, including lactating dairy cows. Use 2 tags per cow for optimum control of face flies, horn flies, Gulf Coast ticks and spinose ear ticks for up to 5 months. Use 1 tag per calf. Apply Cylence Guard insecticide tags with the Allflex Universal Total Tagger. Ear damage may result if used in calves less than 3 months of age. 14 gm.