Yesterday I turned on my wall oven, and a bunch of fuzzy stuff started blowing out from the underside. There's a sort of vent on the bottom there and when I got down on the floor and peered inside I found a big chunk of loose insulation material. Googling this leads to many results about mice or rat infestations. I have no idea how to proceed.
We've lived in our house for two years and about six months ago the cat caught a mouse in the laundry room, but we haven't seen any mice or evidence of mice since that time. I believe the oven is only five years old and there is no noticeable smell. The kitchen is pretty clean and I checked the cabinets under the oven and didn't see anything there except some more insulation. We have a home warranty, but it doesn't cover pest damage.
Questions:
Is it safe to use the oven?
Should I put out traps or call an exterminator?
Is there some sort of scenario where the insulation would just be falling out on its own?
Basically, what would you do?