This is a great puzzle treat box for cats. It works best for cats that 1) like treats, and 2) like toys, and 3) enjoy working a bit for their treats. I have two cats; Nicodemus and Legolas. When I bought this, I knew Legolas wouldn't have any interest in it. It's not that he isn't smart enough to do the puzzles; he's never shown any interest in working for treats. If you're concerned your cat may be like that, buy an inexpensive treat toy (like the treat mouse you can fill and as the cat bats it around, treats fall out of a hole in the side of the mouse). This is the one I bought that Nicodemus enjoys: Temptations Snacky Mouse Cat Toy For Cat Treats https://www.amazon.com/dp/B00OLSARPK/ref=cm_sw_r_cp_apa_i_B5LMCbEQXA6YV If your cat won't engage with simple treat toys, then don't bother with the Trixie Poker Box Activity! Nicodemus loves his treat mouse and quickly figured out the right way to bat it around so he could empty it within minutes. Clearly he needed something more challenging! Shortly after receiving the Trixie Poker Box Activity for Cats, I set it up, putting 4-5 treats in each cavity. Nico immediately pushed the lever to eject the treats from the tube cavity on the side, ate them, sniffed the other puzzles, then walked away. THEN I read the instructions! Please read them; they have some good ideas as to how to set up the puzzles initially to engage your kitty and make solving the puzzles a bit easier. What worked best for Nicodemus, though, was for me to leave the drawer puzzle slightly open (about 1/4") at first, so he could hook a claw over the edge of the drawer and pull it open. I did the same with the puzzle that has the sliding panel at the top. Then I got the brilliant idea to sprinkle a tiny bit of catnip into each of the puzzles along with the treats. If your cat enjoys catnip, this can help to get them more interested in engaging with the Trixie Poker Box Activity. The catnip really got Nicodemus much more excited about interacting with the box and inspired him to spend more time trying to access the treats. We've been using the Trixie Poker Box Activity for Cats every other day for about 1 1/2 weeks, and Nico has now mastered 4 of the 5 puzzles (3 with no adjustments. The one with the sliding top I still need to leave open just a smidge). The only puzzle he has difficulty with is the one with the bone-shaped lever. But I suspect he'll eventually figure that one out, too. Before you buy this - know your cat! If your cat likes other treat toys, they'll probably enjoy this quite a bit. And, be willing to work with your cat a bit and try different things if they don't immediately "get" it and walk away. Edited 3/26/19: Nicodemus is now able to access all five puzzles! It's still challenging, though, and keeps him occupied for about 10 minutes. Sometimes he'll open two or three puzzles, eat the treats, then go do something else. An hour or so later, he'll come back and work on the ones still closed. For Nicodemus, this was a great purchase!