PetSafe Slimcat Slow Feeder Ball for Cats - Interactive Puzzle Game for Your Cat - Fill with Food and Treats - Great for Indoor Play for Kittens and Adult Cats, Portion Control and Fast Eaters (Blue)

I read about 100 reviews of this product before I finally sprung for it and bought it (I'm a grad student....$6 can be up to two meals if I try hard enough!) and all my worries have now gone out the window. I have a 4-month-old kitten, Kiki; and I have had this product for about 24 hours now.This is going to be a long review, so here's the major thing that I was halfway expecting that did not happen: THIS IS NOT AN EXERCISE BALL. By "exercise ball" I mean something like a ping-pong ball or tennis ball that kitty will play with herself like she's trying out for the itty bitty kitty soccer league. I sort of thought it might be, due to the product advertising it as a cat weight-loss aid, but in fact most cats (especially fat cats) will bat at this with their paws and push it with their nose, not smack it across the room. It is not going to travel very far per smack and your cat will not be running around after it. I actually consider this a plus because if she were sending it across the room with every push, it might drop food where she wouldn't find it, but instead she pushes it a little way, sniffs around it for food, then pushes it again. You can see this in the several very excellent video reviews that already exist for this product. Every other benefit of this product that it claimed/that others reported in their reviews has now been validated by my own experience.Here are the things I was worried about that did not happen:Worry #1: That Kiki would not be able to figure out how to use it. She's a pretty smart little cat, but I was afraid she'd dislike the idea of working for her food or something, and keep going back to her bowl. Instead, I filled up this ball with 1/2 cup (=4oz., the daily suggested amount) of her dry kitten kibble (it has pretty tiny x-shaped pieces, <1-cm square and 3-mm thickness), twisted the ball so that the holes looked big enough to let a few kibbles out at once, and put it on the floor. I rattled it around quite a bit as I was filling it/carrying it so she was very interested and seemed to have figured out before I even put it down that her food was in there. As soon as it touched the ground she poked it with her nose, it moved about half a foot away from her, a couple kibbles fell out, and she was munching. I didn't even have to take away her food bowl! (That would have been hard because it's attached to her water bowl =P And by the way, she still drinks her water from the usual place.)Worry #2: That Kiki would be too smart for the ball; i.e., she would manage to get her food out too fast and still be eating it all at once. Since she got the hang of it so quickly the first time, I made the holes smaller the next time I fed her with it (basically as small as possible while still allowing kibble to come out). It's pretty difficult to get the kibble out with the holes this size actually -- I can shake the ball gently with the holes pointing downward and have nothing come out. Kiki still rolls the ball around the floor and the kibble now comes out at a rate of 1 kibble every 10-15 seconds. This does not deter her from continuing to push the ball around, and because it requires a non-trivial amount of effort to get food, she won't continue to eat after she's no longer hungry.Worry #3: That it would not be able to hold enough food to last her 1-2 days (I bought the ball primarily because I'm going on a short trip soon and she'll be all by herself for 1.5 days. For longer trips I'd ask someone to come feed her, but this seemed like a better solution for just a 2-day outing). Last night to test the capacity I filled the ball with 1/2-cup around 8pm, gave it to her, woke up the next day at 2pm (long story) and went to check on her and there was still food in the ball. WIN.Worry #4: That the ball would make a huge mess by leaving lost kibble pieces all over the house. We have hardwood floors so it wouldn't have been such a huge problem anyway, but I was concerned about her pushing the ball under the couch (she always loses her smaller balls under there) because that would be a pain to clean. In reality, two things happen: first, Kiki follows the ball closely with her nose -- if she pushes it and nothing falls out, she sniffs all around the ball before she pushes it again. She's basically a vacuum cleaner with this thing. I left her with a full ball for 18 hours and all I found afterward was 1 forgotten piece of kibble in a corner under the sink (which I brought to her and she promptly gobbled it up). Second, the fact that the ball does not travel very far effectively limits it to whichever room you put it down in. I usually leave Kiki with it in the kitchen and by the time she's done with it it's still in the kitchen. After 18 hours I found her with it about 6 feet into the living room, but there was no breadcrumb trail of kibbles behind her or anything like that =PSo, maybe all this tells you is that I worry a lot, but basically this product delivers. It limits the amount of food my cat can eat at once, stimulates her instinct to hunt for food (AND reproduces the natural reward for hunting: feeding!), reduces/eliminates begging, keeps her out of trouble by distracting her for long stretches of time, and prevents the bulging stomach I used to see after her feeding times. It's difficult for me to weigh her but just by looking at her I would guess she has already lost 0.5lbs (and she only weighs about 5lbs so this is excellent) and it is all in the belly bulge area. She seems more active too (running up and down the stairs, asking me to chase her, running after her ball toys, etc).For those inclined to criticize:I know she is a kitten and a lot of people free-feed their kittens because they are supposed to be growing at a tremendous rate for the first several months of life, but the other thing to remember is that what you expose your kitty to before the age of 6 months is what she is going to be expecting for the rest of her life. I don't want to teach her bad habits (like expecting a full bowl of food 24/7) just because I can't resist her sad-kitty-whimper face. I can always tell if she is actually hungry or if she is just begging for lack of anything better to do because if she's just bored she'll stop begging as soon as I pick up a toy.

Background:This is a longer background story than most reviews but I felt it necessary so you could see why we trained our cat with the SlimCat ball in the manner that we did and why we were so successful. The story provides a baseline of where Ashe was before and after the Slimcat.We had recently switched Ashe our 12.6 pound Maine Coon mix to a new brand of cat food. It turns out most cat food on the market has wheat in it, and I could not risk her food sending me to the hospital. None of the Blue Wilderness food contains corn, wheat or soy so I don't have to worry about cross contamination either! The only concern was that her new food was much higher in calories per ounce because it didn't contain a lot of filler.Good Stuff:She is already more active and jumping more.Her hair is shinier and growing longer.She defends us from the goblins during the night now. (active play)She loves the taste of it.Her poops are smaller (because she doesn't have all of that unnecessary bulk going through her digestive track? Great for my cleaning and hopefully more comfortable for her.)Concerns that led to us looking at the SlimCat Ball:It is a higher calorie food so we contacted our Vet so they could tell us given her ideal weight how much of the new food she should be fed each day. Most vets offer a free service where you can call in with the name of the cat food and they will tell you how much your kitty should eat daily, since each cat and food type is different. She went from being fed 3/4 -1 cup of her old food per day to half a cup of the new stuff. (1/4 cup in the morning and 1/4 cup in the evening). The kibble isn't something that you can level in a measuring cup so we ran the conversion of how many calories were per gram and measure her food out each morning and evening using the kitchen scale. This way she is fed exactly the same amount each day. With the change in the mass of food, she started to cry for her food hours before dinner time and it was heartbreaking. The food may have the same caloric intake but her little tummy was used to twice the bulk each day. As hard as it was on us though we were the good parents and per the vets instructions fed her only what she should be fed and kept the same routine.Pink Kitty Cat Balls to the rescue!:I picked these up with the following goals in mind.1. She would slow down her eating, making her full faster and eventually shrinking her tummy, eliminating the crying.2. It would increase her interaction with the world so she would think and move a little more while she ate.When fed from a bowl Ashe actually lays down on the floor like a log and within five minutes she has finished all of her food. The first day we shook the ball like we do with the food bag to signal that kibble was in there. We placed it on the floor and my husband tipped the ball with his finger so she had a demonstration of how it worked. She promptly ate the food, then stared at him with a look that said "Ok Dad, thanks for that, please tip it again so I can get moar foodz". (Smart Cat, right!? why do the work when you can get Dad to do it for you) For a second demonstration we did the same but this time with her own paw, then we stopped helping her. I made the mistake of getting up and walking past where her food bowl used to be and she went into Vespa Kitty mode. (sounds like a little Italian bike on a rough road when she purrs and runs at the same time) I heard the little scooter just before she could sneak through my legs and trip me.Not wanting her to get the wrong idea I promptly turned around and went back to the kitchen to stare at her new pink food ball with her dinner. Lo and behold she followed me back to the kitchen and started sniffing the ball; then she started playing with it on her own. Day one it took about 45 minutes for her to complete her meal. We had the ball set to the smaller holes but open all the way so the kibble came out easily. The larger holes seem meant for larger treats. Day two it took her 25 minutes to eat all of her food. This told me she was learning and actively using her mind to solve puzzles, something she doesn't do as a lump in front of her food bowl. Day 3 - 10 minutes but with a new development, she didn't eat all of her food!Ashe always finished all of her food within five minutes, occasionally leaving one lonely kibble which we would joke "one kibble for her, one kibble for her homies". This is the first time she hasn't eaten everything since changing to the new diet. While she doesn't run around like in her goblin chasing nighttime romps while playing with the ball she certainly does get up and move a lot more than she did with the bowl. That movement should add up eventually for a slightly healthier cat. After one week at this hole size setting we reduce it slightly so we can keep her eating slowly and playing longer. The full week at the first size is important so that she feels comfortable with using the ball. The goal is a long term feeding solution that will keep her happy, so no extra frustration in that first week just learning the basics.Conclusion:With this success I am giving this product the five stars it deserves for a great price and it working perfectly as intended! The success of the product rests heavily on the cat owner to be feeding the proper amount of food and to not help the cat out too much. Cats are smart and because of how you have fed the cat all these years they are used to being totally dependent on you for food. Let them learn and think about their food, feed them the proper amount as directed by your vet and you should be very pleased by this product.