In 1871 Mrs. O'Leary's cow kicked over a lantern and started a fire that burned down 18,000 buildings in Chicago, leveled 4 square miles and left 100,000 homeless. Not your average fire, but a poignant example of how quickly things can get out of control. As you begin closing up for cool weather, check flammable liquids in your home. More than small amounts are risky. Keep just what you need in tightly sealed containers and carefully discard the rest. Remember flammables give off vapors that collect in small spaces and can be ignited by even the tiniest spark from a furnace, water heater or a light switch. As you put recreational summer vehicles and gasoline-powered tools in storage, be sure tanks are drained, tightly sealed and stored far away from ignition sources. And that's the On The House tip for today.