I bought a new WSM a couple months back and have used it a lot already. The grates where pretty "gunky" and needed to be cleaned. I impulsively bought some ammonia and soaked the two grates in a garbage bag for about 5 hours. I opened the bag and rinse the them for a while; however, after reading more about ammonia I am worried that I made a mistake. Is this a horrible way to clean my WSM grates and if so what is the best way? Would you recommend not using these grates again?? which would suck because they are fairly new. Can I just put them on my gas grill and heat up as hot as can be and even if there was ammonia residue on it, they would be fine to use after that? Any help and advice would be greatly appreciated. I just want to be very confident that when I use them again, they will be safe to cook and eat the meat off them. Thanks, Skeeterproam from Arizona.