The LintEater JR works great for shorter dryer vents-it's the most valuable tool you can own for ensuring the safe operation of your clothes dryer. The professional design makes it easy to clean and maintain the exhaust vent, lint trap and under/all around your appliances. It effectively cleans all types of dryer vents (metal, foil, white vinyl). Clothes dryers are one of the leading causes of home fires. It's easy to see how the LintEater JR may be the safest investment a homeowner could ever make. It will also save you time and money by reducing your drying times.