Tim W Springfield , OR October 28, 2018 Appliance: Whirlpool Electric Range WFE515S0EW0 Whirlpool Range Wfe515s0ew0: Mice in oven insulation. How to replace Oven Insulation. The instructional video was a great help and worked almost perfectly. I have a different model and my control panel wanted to take the range top with it in the step where you lean it back, so it needed some additional support. If you had mice in your oven I just learned you’ll probably also need to replace the rear insulation too, the repair was easy though. Just a screwdriver, a chunk of wood, and the realization that oven sides can get greasy. 4 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes