Abstract: An adsorbent neutralizer for absorbing, without disguising, odorous gases from soiled matter in a relatively large container having a closable opening at least the size of a hand. The adsorbent neutralizer is contained in a perforated receptacle and may be engaged relative to the container via adhesive strips or via a perforated holder on the container. The container may be a plastic trash bag having the absorbent neutralizer on an inside surface.