I'd heard several people rave about these before, but I never really understood what the big deal was.  It seemed like a lot of money to spend on cardboard.  Well, I totally get it now.  Both my cats are obsessed with this thing.  They scratch it, sleep on it, drop their toys inside and poke at them through the holes...it's pretty fun to watch.

As far as paper-based scratchers go, this is very high quality.  It's about as attractive as a hunk of corrugated cardboard can get, and the fluting is very dense, so it holds up well.  Despite their best efforts, my kitties were not able to immediately destroy this like they've done with so many others.  You can just comb off loose pieces as it wears down, then flip it over when it gets ragged.  I also heard someone mention that once both sides are torn up, they cut theirs in half to allow the cats to use the inside parts as well.  I'll probably try that out to lengthen the lifespan a bit.