Epic Brisket Cook

Thanks to your tips my 2nd brisket cook was fantastic after failing on my first brisket on this new smoker. We literally only gave everyone plastic forks because no knives we needed. Question is this SRF brisket filled up the bucket of grease and overflowed a little on a 22 hr cook. Whats the best way to clean the smoker to prevent future grease fires?

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