Visually examine the trash chute. Observe the chute from each floor to look for obstructions and remove any if necessary.
Spray biodegradable enzyme cleaner on the walls of the chute. You can either do this by spraying the inside from each floor or by spraying a generous amount from the top floor and allowing it to run down the sides.
Spray a degreaser on the walls of the chute. Allow chemicals to sit for 30 minutes.
Using a high-powered hose, power wash the walls of the chute removing any dirt and grime residue along with the cleaning chemicals. Allow the chute to dry.
Apply a deodorizer to the chute to improve the smell of the chute.