The aim of the study was to evaluate both the antimicrobial activity and the effectiveness of a combination of sodium hypochlorite and hydrogen peroxide (Ox-B) for killing Pseudomonas aeruginosa ATCC 19142 cells and removing P. aeruginosa biofilms on aluminum or stainless steel surfaces. A combination of sodium hypochlorite and hydrogen peroxide effectively killed P. aeruginosa cells and removed biofilms from both stainless steel and aluminium surfaces. Journal of Applied Microbiology 2007;103:794-802.