Methods and treatment compositions for imparting durable antimicrobial properties to carpet are provided The method includes applying a composition comprising a first antimicrobial compound and a fiuoropolymer to the carpet substrate The carpet substrate may be steamed thereafter The treatment composition may comprise a fluoropolymer, an antimicrobial compound selected from a group consisting of zinc pyrithione, a silver-containing antimicrobial compound and combinations thereof, and a foamer Carpet products treated with the treatment composition or treated in accordance with the methods are also provided