Really though, it's more a sort of diligence bonus on top of the regular earnings he makes from his teeth manufacturing business. Looked at that way, it's pretty impressive quickly obtain an otherwise lost 10-15K per decade as opposed to just losing money on carpet removal once a decade. And all of it for, what? a few hours of work?
Yeah, it's partly a tradeoff for convenience. The carpet helps capture dust which makes everything more breathable in the lab as well. I'm sure bigger labs have more sophisticated facilities, but he's just one guy in his attic.
