The invention relates to a method for producing a mixture of bacteriophages, wherein at least two different bacteriophage strains have been reproduced separately, wherein a staphylococcus strain is grown in an preculture with each of strains of a bacteriophage that can lyse staphylococci and is then further reproduced in a main culture, and is then purified, and the different strains are then mixed, wherein the mixture of bacteriophages used comprises at least two different serotypes of bacteriophages that lyse specifically bacteria of the species Staphylococcus.
