A bit OT:
But ESPECIALLY the rental market - professional or private - is horrible on this. Before purchasing my home, I had rented 7 different apartments over the years.
No mater how thorough I'd be on washing out apartment, or how careful I'd be with it, they would always find something - and claim deductions on the deposit.
This worked for the first apartment I rented - after that I got wiser, and took pictures of everything before actually moving in. Better yet, with the landlord or representative as witness. Document everything. I even recorded the phone conversation - informing that the conversation would be recorded, and if that was a problem, we'd take everything in writing.
This saved me lots of deposits. Like clockwork, I'd be informed that they found something - sending evidence. I'd reply back with my evidence, and suddenly everything's OK.