The complex pyobacteriophage has the ability to specifically lyse staphylococci, streptococci, enterococci, Proteus, Klebsiella pneumoniae and klebsiella oxytoca, Pseudomonas aeruginosa and Escherichia coli.
The polyvalent pyobacteriophage has the ability to specifically lyse staphylococci, streptococci (including enterococci), Proteus, Klebsiella pneumoniae, Pseudomonas aeruginosa and Escherichia coli.