I’ve had my Blackstone about 9 years and I’ve never had a reason to season it again or even redo the seasoning. It’s got some buildup but nothing sticks to it and it’s not caused any issues. I always scrape it then wipe it down with a old rag (I go through several a year) and depending on what I have cooked I will pour water on it then use a spatula to hold a rag and scrub it good then rinse it off. I do have a bead blaster if I ever need to redo it but it’s doubtful I will. I just cooked some cut up chicken breast I coated with olive oil, after scraping the griddle I simply wiped it off, the olive oil just add to the protective coating, lol.