That was the average toll taken by fires caused by clothes dryers
between 2008 and 2010, according to the U.S. Fire Administration (USFA). 

Many homeowners consider their clothes dryer a necessity. However,
improper installation or maintenance of this appliance can pose a serious fire
risk to families. The leading factor contributing to dryer fires is failure to
clean lint from traps, vents and areas surrounding the dryer. 

Clothes Dryer Do’s

• Have your clothes dryer installed by qualified personnel.
• Clean the lint filter before and after each cycle.
• Clean the back of the dryer where lint can build up. 
• Inspect the venting system behind the dryer to ensure it is not
  damaged, crushed, or restricted.
• Outside wall dampers should have a covering that will keep out rain,
  snow, and dirt. 
• Make sure the outdoor vent covering opens when the dryer is operating.
• The interior of the dryer and venting system should be serviced and
  cleaned periodically by qualified service personnel, especially if it is taking
  longer than normal for clothes to dry. 
• Replace coiled-wire foil or plastic venting with rigid, non-ribbed
  metal duct.
• Have gas-powered dryers inspected by a professional annually to
  ensure that the gas line and connection are intact and free of leaks. 
• Check periodically to make sure nests of small animals and insects
  are not blocking the outside vent.
• Make sure the correct electrical plug and outlet are used and that
  the dryer is connected properly.
• Read manufacturers’ instructions and warnings in use and care manuals
  that accompany new dryers.
• Keep the area around the clothes dryer free of items that can
  burn. 
• If you will be away from home for an extended time, unplug or
  disconnect the dryer.

Clothes Dryer Don’ts

• Do not operate a clothes dryer without a lint filter or with a lint
  filter that is loose, damaged, or clogged.
• Do not dry anything containing foam, rubber, or plastic (i.e.,
  bathroom rugs).
• Do not dry any item for which manufacturers’ instructions state “dry
  away from heat.”
• Do not dry glass fiber materials (unless manufacturer’s instructions
  allow).
• Do not dry materials that have come into contact with anything
  flammable (e.g., alcohol, cooking oils, gasoline, etc.). These should be dried
  outdoors or in a well-ventilated room, away from heat.
• Do not leave a clothes dryer running if you leave home or when you go
  to bed.

Signs of a Blocked Dryer Vent

• Lengthy drying times.
• Clothes are hotter than normal at the end of the dry cycle.
• Dryer deactivation due to high temperatures
• Increased heat and humidity in the area of the dryer.