The Fort Riley Army Base includes a 5,600 ha impact area (IA) which is off-limits to direct human access. Munitions are fired into the IA and fires periodically result. Thus, disturbance associated with training is frequent in the IA. Elk and feral swine spent an unexpectedly high proportion of time in the IA. Coyotes and other mesopredators used the IA in proportion to the amount of their home ranges that overlapped the zone. Elk were on the IA during the fall deer and elk hunting seasons when 72 percent of locations of 18 elk fitted with radio transmitters were on the IA. Feral swine increasingly used the IA during a two-year swine eradication effort on all areas of the base except the IA. During the last year of swine control off the IA, 14 were killed. This was followed by four days of shooting from a helicopter over the IA. Two hundred and four feral swine were killed on the IA; none were sighted off the IA. Coyotes and other mesopredators showed no seasonal increase or decrease in use of the impact zone. Highly disturbed sites where direct access by humans is prohibited may be important refugia for game species and other animals that are periodically pursued by people.