My cat is always a bit cautious about new things so she ignored thia cat condo for about a week.  Then she started checking it out.  She uses the scratcher, which covers a larger part of the outside......a good thing.  She curls up inside the lower level of the condo but not the top or second levels.  The only thing is I wish it were sturdier... it moves just a bit when she uses the scratcher....but that doesn't seem to bother her.