It  had that nasty chemical smell of new carpet, so I unpacked it in the garage and let it air out for 2 days.  Built it, moved it in the house, sprayed with feliway spray.  Cats are not interested yet, but I'm sure we'll get there.  It is ok quality. I doubt the carpet will last very long once they start using their claws on it.  It is the same issue I've had with all cat towers. Unfortunately my cats prefer the carpet to the sisal which is a bit more durable.