You can easily use a leaf blower to blow out the pipe from the dryer vent. Insert the leaf blower into the dryer vent duct leading to the outside and turn on the leaf blower. Allow it to blow for about 30 seconds. Turn it off and check outside to see if it has blow debris. You can continue to do this until it runs clean. It won't work as well as using the duct brush, but will work to keep it somewhat clean.