Almost to the point of destruction. We may have to order another one before too long. This was super-easy to put together, took less than 20 minutes. The cats love lounging on it and scratching the bee-jeebers out of the sisal. Great value!  

Pros: Everything. Easy to assemble, solid, kitties love it
Cons: Can't withstand the loving ministrations of six cats. But then, what can?