This to me is a great product. Yes, it is just a "box", but it is also versitile. Your cat will have hours of fun. It can be used as there scratching post, there hiding spots. Cats love peek-a-boo. Not to mention it is dirt cheap and there will always be a supply.

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[updated on 2009-01-25 15:14:19 GMT]:
all my pets love it. including the dog. Yum yum, smokey, koko, gyzmo, Runty, cloudy, peachy & Terry

Pros: It keeps there nails shorter, keeps them from wanting to scratch on the furniture, they stay occupied for a while and its pretty much free.

Cons: It can be messy sometimes and they do take up space-depending on your space limits

Hard to wrap Christmas presents because someone is always laying in the boxes. And if we unpack anything around here, it always has to be explored. We have a couple of big TV boxes that we've stashed behind furniture--leave the flaps open and they can play inside, and put a blanket on top and they can sleep there when done playing.

Pros: Everyone loves them

Cons: none

Every time something is delivered, the cats have to climb on top of the box to check for interesting smells. Then, once it's opened, they have to check the inside. Kinda fun to loosely close the ends while they're in there and watch them fight their way out. After awhile they settle down and it becomes a sleeping hideaway

Pros: free

Cons: none

Have great pictures of our cats playing in these but due to uploading errors cannot post them. Holidays always bring in a fresh supply. The cats think they are playing cops and robbers when they play in them.

Pros: FREE!!!

Cons: Have to recycle them

Whenever a cardboard box comes into our house it's a big moment! The cats love cardboard boxes. They play in them and hide in them. The best part of all, they are free! I always say the best cat toys are free - boxes, water bottle tops and crumbled up paper!

Pros: Cats love to play in it!

Cons: None