A method for decontaminating a biologically contaminated fluid, comprising the steps of: providing a substrate comprising an open-cell foam at least substantially coated with a solution consisting essentially of an organo-functional silane-based quarternary ammonium salt at a concentration of between approximately 0.10 percent to approximately 3.7 percent in water at least substantially drying said solution on said substrate placing said coated substrate in a container introducing into said container a fluid to be decontaminated and agitating the container for a period of time sufficient to substantially biologically decontaminate said fluid.