I've used balled up aluminum foil, wet newspaper, and wooden scrapers. All of them work but I like the wooden scrapers best because they're easier to apply pres

I've used balled up aluminum foil, wet newspaper, and wooden scrapers. All of them work but I like the wooden scrapers best because they're easier to apply pressure with. You can use any plank of wood really. Do it while the grill is hot and you'll wear grooves into the wood.