(Biocare Animal Products) PuriShield Ear Drops are formulated to support normal ear health in dogs and cats, and may relieve the discomfort associated with bacterial overgrowth from bacterial, viral, fungal, and yeast infections. The antimicrobial peptides (AMPs) in PuriShield help protect animals from bacterial and viral infections. The Purifect technology in PuriShield kills bacteria and viruses in the same way as nature's own AMPs. Apply liberally into the ear canal. Massage and work into infected area. Wipe to remove excess. Apply 2 to 3 times daily for several days.