Very easy to assemble and my cat loves it, uses it all the time. Which brings me to the reason why 3 stars only; I contacted the manufacturer to order a spare board as it wears quite fast and I was told spares are not available at this time. You have to order a complete new scratcher. You can get 20% off a reorder if you live in the US, discount not available for Canada. So at that price, I will not reorder. Had I known that in advance I would not have ordered at all.