Are you tired just by putting a steak burn your home? Well what I think are put fire alarms in case something happens this will help but will attract a certain amount of zombies. But the water go to exterminate the fire They could put them in rich houses, public places and a few houses regular home, also could put extinguishers in case a fire occurs serious alternative and save your home. Fire alarms when water runs may be used as the only 3 times and now, also buttons to turn the alarm if you would