Our 6 are indoor only. Not only do we live on a street which isn't really busy but where people do not understand the words "speed limit" but we also have a number of rude, obnoxious children around. I wouldn't subject my guys to that no matter what. We were also warned when we bought our house that a few people on the street had their cats taken away by the hawks that fly overhead. We will take a few of the guys outside in nice weather, into the backyard, whhich is fenced in. They are interested in munching on some grass and that is it. The ones we know would probably bolt don't get that opportunity. I can say from experience that they don't mind being indoors. The last fuzzball we brought in, Scooter, came inside the end of September. It took about 2 weeks for him to stop crying at the door. Then the first time the rain/wind started outside, and he was curled up in front of the furnace vent, he figured out pretty quick that inside was better!