We analyzed 21 owner comments across 4 YouTube reviews, published between 2018 and 2019. That's a small, older set with only one direct mention of the Digger by name, so we don't draw an owner-sentiment score from it. Of the comments with a clear sentiment, 5 were positive and 2 negative. This review leans on the published design and on well-established feeding guidance, and uses the comments for the practical lessons.
A few pounds on a cat is a percentage
Two extra pounds on a 10-pound cat is 20% of its body weight. That's the scale a cat's weight works on, and it's why vets track body condition rather than eyeballing size. The usual tool is a body condition score: a hands-on check of how easily you can feel ribs and see a waist. If your cat's score is high, the plan that works is the one your vet sets: an exact daily amount of food, measured and weighed, plus slow, steady loss.
A puzzle feeder fits inside that plan. It doesn't replace it. Food that comes out a few kibbles at a time, fished up from the bottom of a tube, takes longer to eat and gives an indoor cat something to do. Feed part of the measured daily ration through the Digger rather than adding extra food on top.
Getting a reluctant cat to use it
The most useful comment on the review videos (19 likes) was a setup tip: if your cat is struggling, take the cups out and put the food straight into the base, then put them back once the cat understands where food comes from. Per the published product description, the set comes with short, narrow tubes and long, wide ones, so you can change the difficulty.
Expect some resistance. The most-liked comment (24 likes) came from an owner whose cat pulled the green cups out with his teeth and dumped the food on the floor. Another owner wrote that their cat hated it but was losing weight on the diet it was part of. That's one owner's story, not evidence that the feeder causes weight loss.
