Several times throughout the day today my alarm has beeped as though there is a fire. Obviously that scares me, so i start checking the whole house, this time at 5 am. I'm exhausted, and now angry because i cannot find any sign of a fire anywhere!!! And none of my other alarms are sounding! I cleaned it as suggested, but still to no avail. Frustrating! I was going to call customer service, but after reading countless horror stories on Amazon and Target.com, I won't even bother.