Boehringer Eprinex Pour-On is a broad-spectrum treatment for beef and dairy cattle, including lactating cows, that controls gastrointestinal roundworms, lungworms, grubs, sucking and biting lice, chorioptic and sarcoptic mange mites, and horn flies. Its convenient pour-on application provides effective parasite control without requiring any milk withholding or meat withdrawal, making it safe and practical for herd management.