When we were there we did not take our food out of the camper. We had a hardside. I would definitely take the food out if I was in a PUP or tent. And never leave your grill, pans or cooler out. We were cleaning up from dinner when the ranger rolled around. I guess he thought we weren't moving fast enough so we got a stern warning. Later I saw him remove some coolers and a trash bag that somebody left next to their tent. Idiots. I don't know if they had any bears that week, but we had some bison walk through our camp--they left a 5ft wide lake of stinky pee behind our trailer. Another bison sat down on a tent nearby--scared the people in it half to death!