The present invention comprises methods and compositions for antimicrobial devices comprising metal containing compositions which are resistant to heat and light discoloration. The metal containing compositions may comprise salts or complexes of silver, copper or zinc. In one aspect the compositions comprise silver salts. In another aspect, the compositions comprise silver complexes. In one aspect, the metal salts may comprise metal salts of saccharin, acesulfame, long chain fatty acids, and alkyl dicarboxylic acids. The compositions further comprise polymers which form salts or complexes with silver, copper or zinc. The methods of the present invention comprise treating devices with the metal containing compositions, including, but not limited to, such devices as woven wound care materials, catheters, patient care devices, and collagen matrices. The present invention further comprises treatment of humans and animals with the antimicrobial devices described herein.
