Entertains the cats for a few minutes at a time. It doesn't provide as much activity as expected, as the beam jumps erratically, and the cats don't follow it too well. They are engaged, however, but just not very mobile.
While I didn't expect one, it'd be nice if you could set a timer or somehow activate it remotely, to give the cats something to do while you're away or at work. As it is, you press a button and the laser moves around for 15? minutes before shutting off.
Pros:
Cats are entertained
Cons
Is a bit too erratic for the cats to follow for active exercise
Can't set the aim for the laser - the only adjustments are up and down. The farthest down setting points inside the device.
No timer or remote activation (but for $15, I guess that shouldn't be expected)