Manure and subsequent odours generated from intensive livestock operations is growing in public concern. To aid in promoting new manure treatment technologies the Quebec Ministery of Agriculture, Fisheries and Food established “Technological windows in manure treatment systems” (TW). These TW’s were established to better inform livestock producers and the public about new, or enhanced manure management technologies. The type and relative success of manure treatment and odour reduction of 1) anaerobic air ambient temperature, bisor biofiltration, bio-fert, Ppurin Par and Fan separator are outlined.