Using my leaf blower. It has a regular clean out plug that I suck out with a shop vac ,but a buddy told me to blast the whole thing out so what the hell. It has a flapper that opens when it vents on the side of the house so I climbed up to make sure that whole area was clean. Mrs. JG complaining that it doesnt dry as fast as it should and we need a new one. 11 years old maybe we do ,but I'm gonna try all this other stuff before I buy a new one. I know this is a real exciting topic,but if you dont clean this things out you run the risk of setting your house on fire,and it is supposed to make your dreyer run more efficiently.