From the thread title alone, I thought this was gonna be another "same ol' thread topic," but I'll give kudos to the OP for coming up with a different sort of thread.
Homeowners' insurance likely won't cover clean-up, but it goes far beyond bleach, buckets, mops and sponges. I've seen entire rooms need to be re-carpeted, and depending on how much bodily fluids for how long, were in the carpet, maybe some flooring replaced as well. One bathroom suicide I was familiar with required a new tub and wall tile around the tub. Drywall, possibly insulation if it's an outside wall, might need to be replaced. Lotta cutting, patching, texturizing and painting can be needed. I know someone who found a bone fragment (apparently, a sliver of skull) imbedded in a wall after the "clean-up." 12-gauge shotguns can create big messes, too. Guess I never thought to follow up with anyone and ask if their homeowner insurance helped out...
But, as considerations for using firearms for self-defense go, this one isn't nearly as tiresome as talking about how using your full custom 1911 for defensive purposes is a bad idea, 'cause it'll just spend the next three years in an evidence locker, and even if you ever get it back it'll be rusty, pitted and have an evidence number engraved on it.