Also significant that the vast majority of solved murders are committed by someone you know. The FBI stats have <10% of solved murders being committed by strangers. It’s impossible to know what percentage of unsolved murders were committed by strangers, but it’s clear the odds are not in your favor if it isn’t somebody the police can add to their list just by asking around.
That’s what I was thinking. Linoleum can be ugly and will cut/dent easy, but it’s the cheapest to replace.