Are you hauling it yourself?
Take your trash to either Logan Landfill or Bozeman Convenience Site.

Need to have your waste picked up?
Republic Services: 406-586-0606   and   http://www.republicservices.com/
City of Bozeman:   406-582-3200   and   http://www.bozeman.net/SolidWaste
L&L Site Services: 406-388-7171    and   https://www.llsiteservices.com/home.html