Synergized formulation lengthens insecticidal activity for the control of horn flies and lice on beef cattle and calves. Long-lasting, ready-to-use pour on provides season-long (January to April) lice control with one application.

Contains 1% of the highly bioactive pyrethroid, lambda-cyhalothrin, plus 5% piperonyl butoxide.

Dosage: Apply down the backline at the rate of 10 ml/head for cattle less than 600 lbs, or 15 ml/head for cattle over 600 lbs. Repeat once every 2 weeks if needed, however do not apply more than 4 times within any 6-month period. Not for use on dairy cattle or veal calves. No slaughter withdrawal.

90 ml Squeeze 'N' Measure Bottle treats 90 550-lb cattle; one gallon treats 378 550-lb cattle.