Similar to other poncho-like garments in Latin America, a ruana is basically a very thick, soft and sleeveless square or rectangular blanket with an opening in the center for the head to go through with a slit down the front to the hem. A ruana may or may not come with a hood to cover the head.
The International Association of Fire Chiefs recommend a carbon monoxide detector on every floor of your home, including the basement. A detector should be located within 10 feet of each bedroom door and there should be one near or over any attached garage. Each detector should be replaced every five to six years.
Any standard carbon dioxide detector with a battery can be used. Place the carbon monoxide detector in the vehicle, close the windows and vents, start the vehicle and immediately exit. After 10 minutes, shut down the vehicle, and check the detector's readings to determine if there is a carbon monoxide leak in the car.