“if i question the sterility of any dressing material, i should not use it.â€-anything dropped on the floor is no longer sterile and should not be used. the statement indicates lack of understanding. anything dropped on the floor is no longer sterile and should not be used. the statement indicates lack of understanding. if there is ever any doubt about the sterility of an instrument or dressing, it should not be used. the 4 x 4s should be soaked prior to donning the sterile gloves. once the sterile gloves touch the bottle of normal saline they are no longer sterile. this statement indicates a need for further instruction.