Your smoke detector that's old enough to drive a carTragically, consumer goods don't last forever.There are a lot of things in our homes that we don't give a second thought -- or a second scrub -- as often as we should.We rounded up 49 items that you might want to consider replacing.Well: Sure, you always replace the batteries in your smoke detector, but the U.S. Fire Administration says you should also replace the entire smoke detector every 10 years.Silicon Valley congressman: Regulate political ads on Facebook just like copyright