Can bacteriophages be used to fight bacteria?

Bacteriophages are bacteria viruses that penetrate the cells of microorganisms in a special way, stay in them until the cell dies completely. Bacteriophages have group- and type-specific antigens. They are sufficiently resistant to environmental conditions. These viruses are strictly bacterial specific. They affect only the cell that has specific receptors on the surface. In connection with the above properties, it is reasonable to use bacteriophages and have been used against microorganisms for a long time.