EOP of phages on Salmonella colonies isolated from the larvae infection model. Larvae were infected with the MDR S01160-12 S. Typhimurium strain and treated with either a 2-phage (SPFM10 and SPFM14), 3-phage (SPFM4, SPFM10 and SPFM19) or 4-phage cocktail (SPFM2, SPFM10, SPFM14 and SPFM19). If Salmonella colonies were recovered after 72 h, colonies were picked and for 10 colonies from each group phage EOP was assessed to the phages in the cocktails. Red error bars represent colonies picked after larvae were treated with the 2-phage cocktail, blue error bars for the 3-phage cocktail and green error bars for the 4-phage cocktail. Average plaquing efficiencies are shown from three biological replicates and error bars represent SEM.