When lint builds up in your dryer and its vents, the dryer becomes less efficient. It takes longer for your clothes to dry and your energy bill goes up. While saving money is always good motivation to get something done, the main reason to clean the lint out of your dryer vents is the risk of fire. Vents should be cleaned at least once a year. You could spend approximately $30 for a special brush with a long, flexible shaft, but a handheld plumbing snake and a rag will do the job just as well. For easy instructions, see the pictures in the article.
Read the full article here: Don’t Burn Down Your House: Preventing Clothes Dryer Fires