A clean dryer lint trap makes a bigger difference than you'd think. Here's the most effective method, plus the mistakes most people make.
Pull out the lint screen and remove all loose lint with your hands.
Wash the screen with warm water and dish soap. This removes dryer sheet residue that builds up on the mesh.
Let the screen dry completely before reinstalling. A wet screen can create static and reduce drying performance.
Use the crevice tool to vacuum inside the lint trap slot where the screen sits.
For deep cleaning, use a long lint trap cleaning brush to reach lint deeper in the trap housing.