But you know what isn't one? Crumbs in my non-self-cleaning oven!
Step One: crank the oven to 450 for 20 minutes.
And OK, sure, sure, it MAY be a problem that I keep a dustbuster under the shit table in the entry way, and it MAY be a problem should anyone catch me vacuuming the inside of my oven (it's now off, for Pete's sake, that is Step Two!)... but I have a sparkling clean oven now, free from crumbs, easily vacuumed up, having lost their substance in the aforementioned 450 degrees.
Step Three: cheers for cleanliness!