Oven cleaner. But they are very cheap. Don't waste your time and just replace.
Yes, Kelli, I agree. Replace is the answer. I looked on Amazon and they have some nice ones but I have not measured my burners yet. Also, most of the good GE ones are for electric ranges. I hope I find some. Maybe I'll choose and order just one and if it fits I'll order 3 more. Thanks for your reply.
SOS pads work well. You can get most of the gunk off.
Oven cleaner works quickly