Damage Control
Some landlords have a weird definition of what damage in a building is. The next time you rent a property that requires a damage deposit, make sure to define what constitutes damages clearly. Otherwise, you may have to part with your damage deposit, even if you have managed to avoid destroying anything in the building.
To be fair to the landlord, dust bunnies do look a lot like human hair, and yeah, maybe the landlord was in a bit of a lurch and needed all the dollars he could get. The moral of the story is to clean out properly when moving out of a property, lest a dust bunny prevents you from getting your damage deposit back.