Did you know that for a good night's sleep, you should replace your mattress every 8 years and your pillows every 2 years? And did you know that the American Dental Association recommends replacing your toothbrush every 3 to 4 months? According to an article on HLNTV.com, there are eight other common household objects that need to be replaced on a regular basis, including your homes smoke alarms. "In the event of a fire, a smoke alarm is a key factor in a safe resolution," says HLNTV. "The National Fire Protection Association urges consumers to replace all smoke alarms every...