To be honest, Doc, I don't clean my grates that often either; like you, just Grill Floss. But, I do periodically soak the round drip pan in PBW to de-gunk it after a nasty cook or two. I do clean the rotisserie basket after each cook with PBW in a 5 gal bucket. Need to flip it end over end after a couple of hours, but it really does the job. Only downside of PBW is the price. But, I always have it around for the brew room cleanups anyway. I generally buy the 4# buckets at the local homebrew supply shop.