Our two young Persians couldn't wait for us to assemble their tree before they began playing with it.  We placed it in the livingroom where one immediately went to the top and claimed that location.  The other one took a few days before becoming brave enough to try the top perch - now there's a race to see which claims it first.  Both have begun sleeping on it during the night instead of in our bed.  Each post is wrapped in sisal and is a magnet for their scratching.  Must admit I was leery at first but this is one great product - and the price can't be beaten!