Depending on your climate and how often you use the grill, you may not need to do this or clear the auger every time. It is good practice though to clear it out from time to time to get rid of any build up. You can definitely use a shop vac for this.

How do you clean an augur?

The first step necessary is to quarter fill a bucket with hot water before pouring a small amount of antibacterial detergent in after it. Follow this with more water until the bucket is half full. After removing the auger from the drain, deposit it in the bucket and leave it to soak for a few minutes.

How do you clean and store an auger?

Rinse the auger in clean, warm water, then dry it completely with a rag or newspaper. This final step is crucial. If you store the auger while it's still moist, it will rust. Rust shortens the lifespan of any metallic tool.