We live in the suburbs and have one spayed girl (spayed after 2 heats) and one entire girl. I am super paranoid and when on heat they don't go off the property at all. She can go in the back yard under supervision (in case a male has somehow gotten in I would not let her out unattended) but during the most dangerous phase only out to toilet on lead because I worry she will scale the fence and vanish. She doesn't seem to mind staying home for three weeks because she is an extremely lazy dog at home. She plays wrestling and chasing with our other girl like usual.