Decker & Desjarlais Address: 125 S Main St, St Ignatius, MT 59865 Phone: (406) 745-0089 Hours: Mon: 9am-5pm Tue: 9am-5pm Wed: 9am-5pm Thu: 9am-5pm Fri: 9am-5pm Lawyers Other Businesses: Diamond Dog Enterprises at 74570 US Highway 93, St Ignatius, MT 59865