Antibacterial Foam Dressing 4 X 4 Inch Square Non-Adhesive without Border SterilePHMB Hydrophilic Foam Dressing Sterile, non adhesive wound dressing impregnated with PHMB Features polyhexamethylene biguanide (PHMB) substance which kills and inhibits the growth of bacteria Absorbent dressing designed for moderately to heavily exuding wounds Maintains effectiveness against a broad range of gram positive and gram negative microorganisms including some multi drug resistant strains such as MRSA In vitro testing demonstrated dressings