I doubt a mandate like that would be possible. Especially stating curry directly. They already aren't allowed to damage the place, but proving its a "damage" is

I doubt a mandate like that would be possible. Especially stating curry directly. They already aren't allowed to damage the place, but proving its a "damage" is probably the hard part. And typically they are already placing a deposit to cover any potential damages. I had a rental for a while and there was extras for pets, but I do not think you could really do it for anything else. There was a 'pet fee' of like $1-200 per pet to cover carpet cleaning and such. Then an additional 'pet deposit' of half a month rent, on top of the main deposit of a month of rent. The fee was kept no matter what, and then the deposit was there to cover any additional damage like scratches and such. You might be able to claim lingering smells, no matter what they were caused by, as damages to keep their deposit. Still a lot that could go wrong with it. As you might already have a new tenant lined up, and once they move in good luck proving in court the smells were from the previous tenant. Or you have to leave it vacant for some time to get it cleaned, costing income. Edit: Just speculating based on my experience in the US. Mostly VA and NC. Obviously could be very different elsewhere in the world.