Like... outside outside, or in a garage or shed? They need to be heated and fed, so I don't think the backyard would work too well. They're pretty awesome - they are tropical roaches that don't smell, don't bite, don't climb, and don't jump/fly. Just need to be in a rubbermaid tub with a screen for ventilation, water crystals and food, egg crates to hide in, and a human heating pad so it stays about 80-90F in the tank. Pretty easy.