Did you know that every home must have a carbon monoxide detector installed by July 1, 2011? The loud warning alarm detects harmful fuel and other poisonous gases that is odorless to a person. The gases not only kill humans but also have harmful affects from only a minor amount of exposure such as: cronic headaches, dizziness, amnesia, and more. The detectors run from $20-$70 depending on the type of installation: wall mount or plug in, and can be purchased at a home improvement store. The package has specific installation requirements, so please follow directions. If you protect your family from intruders, then you will have the sneaky gases stopped before they attack.