The present disclosure provides diphenyl-impregnated compositions that are capable of delivering diphenyl into an environment for extended periods of time. In some embodiments, the compositions include a melamine copolymer foam, with formaldehyde-melamine-sodium bisulfite copolymer foams being particular effective. The present disclosure also provides methods for the manufacture of diphenyl-impregnated compositions and methods of using those compositions to achieve effective odor and mold/other fungi control.
