oven insulation

Found the mouse house...in my friggin oven! under the gas burner top there is a nice bed of insulation that would make a mouse proud to sleep on, among other things. So out comes ALL The insulation and in goes the new stuff. What can I use? $15 Pink Owens Corning? Fiberglass melts at 1000F. can I use it or do I have to go with $120 blanket of official Fridgidaire insulation made of mineral wood or some other stuff? This wrap goes over the stove portion so its roughly 20 wide by 82" long.