Step 3 · Inspect and Clear Surface Debris
Before attempting to clear deeper clogs, inspect the opening of the vent pipe. Often, the blockage is right at the top. Wearing your work gloves, carefully remove any leaves, twigs, animal nests, or other debris that you can see and reach from the opening. A small trowel or a pair of pliers can be useful for pulling out packed-in material. Be careful not to push the debris further down the pipe.