Use 4g in 800 mL drinking water. For treatment of psittacosis / ornithosis (caused by chlamydia psittaci) and other susceptible bacterial diseases in caged and aviary birds and pigeons by drinking water medication, Psittavet Powder aids in the treatment of respiratory infections such as Psittacosis/Ornithosis and other susceptible bacterial diseases in caged & aviary birds and pigeons. Psittavet was formulated by avian veterinarians as a safe and effective treatment for Psittacosis / Ornithosis. Easy to use - In water medication allows flock treatment without catching individual birds.