DIAMOND Maintenance Formula Adult Dry Cat Food, 40-lb bag - Chewy.com

Diamond Maintenance Formula Adult Dry Cat Food

By Diamond
Rated 4.2079 out of 5 stars

$41.99Chewy Price
$39.89Autoship Price
(Save an extra 5%)

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About This Item


  • Formulated with 22% protein, 12% fat and other vital nutrients to support an ideal body condition for your moderately active feline.
  • Chelated minerals help ensure maximum absorption of vital nutrients; powerful antioxidants including selenium and vitamin E help support his immune system and overall health.
  • Omega-3 and omega-6 fatty acids provide support for healthy skin, a shiny coat and overall well-being, while taurine helps to support your pal’s overall health.
  • Made with ingredients from trusted and sustainable sources for complete and balanced nutrition with essential vitamins and nutrients.
  • Made in the USA by a family owned and run company with the most scientifically advanced food safety protocols because your pal deserves nothing but the best!

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Nutritional Information

Feeding Instructions

Play Video: Learn More About Diamond From Our Team of Experts
Learn More About Diamond From Our Team of Experts

Questions & Answers

17 Customer Questions

Why is there no tuarine in this on ingredients list? It’s one of the 5 needed ingredients a cat must have.
Answer by ChewyJul 26, 2020
This cat food contains 0.1% Taurine content on an as fed basis, minimum. This formula does not contain synthetically added taurine within the ingredients. Taurine is found naturally within meat, with the level varying depending on the type of meat.

Roughly how many cups are in the 40lb bag?
Answer by ChewyJan 13, 2018
There are approximately 4 cups per pound. The 40 pound bag will have close to 160 cups.

How about hairball control?
Answer by ChewyApr 07, 2018
This recipe has added antioxidants, along with essential vitamins and minerals to further support overall health and wellness of your pet. It's not specifically formulated to help with hairballs.

well this dry cat food help my cat skin and coat
Answer by ChewyOct 02, 2018
The Omega-3 and omega-6 fatty acids found in this formula can support healthy skin and a shiny coat.

ReviewsWrite a Review

Rated 4.2079 out of 5 stars
279 Ratings
Would recommend to a friend

279 Customer Reviews

Rated 5 out of 5 stars
By whiskers on May 5, 2023

nutritious USA made cat food

i buy the 40 lb bags for my barn cats i have close to 20 of them. i tnr so most have an ear tip and cannot make babies! my cats like this food especially if i add a little more protein to it! a can of tuna or mackerel, fresh chicken etc., i sometimes add a bag of rachel ray dry cat food to it. it does not have any dyes in it and so i'm going to continue to buy. i had health issues with two cats that ate meow mix it's junk food.

Rated 5 out of 5 stars
By Jenny on May 18, 2023

Using for renal cat

I found out one if my ferals has renal issues. I tried prescription renal food, but he would not touch it. This has lower-ish phos, adequate protein and he likes it. Win for us! Not sure I would feed it to my house cats, but maybe someday. Definately try this if you need a low phos diet.

Rated 5 out of 5 stars
By Nicole on Apr 4, 2023

Super buy!

I have a horse farm so nice are a common occurrence. I adopt feral cats from the local Humane Society so I do not have to put out poison. I keep dry cat food available during the day. Since I have a large hay barn I currently have 20 cats and that requires a lot of dry food. I discovered this brand on Chewy and I will never buy anything else. The cats like it, it is easy to feed and incredibly economical for me. A good QUALITY food at a reasonable price.

Rated 1 out of 5 stars
By Chris on Apr 11, 2023

What Happened To This brand?

I bought 2 40 lb bags, as my cats (and fed strays) have always eaten without issue. But these last 2 bags really missed the mark. My cats seem to be hungry all of the time, their fur is now very oily yet it appears they have dandruff. 2 have lost weight, which is always a concern. Vet visit proved negative on all tests. We are going for a different brand.

Rated 5 out of 5 stars
By Lulu on Mar 7, 2023

Good maintenece food for the community cats

I feed about 10 ferals, and will go through about 70 lbs every 4-6 weeks. I usually mix one 30lb bag of Friskies with a 40lb bag of Diamond, but Chewy and all the local stores have been out of Friskies for weeks. So I mixed the Diamond with a bag of basic Kirkland cat chow, and it seems to be just fine for them. In fact, I've noticed that since I switched out the Friskies for Kirkland, the mix seems to be better for their skin and coats. The ones that let me pet them, I've noticed they're softer to the touch, and more shiny. Less dry skin and dandruff. Its a bit more per lb, but not so much more. Not sure what caused the shortage, but it was damned inconvenient, so for now at least, I'll keep them on this blend. None of my feral cats are picky eaters, they'll eat whatever I put out.

Rated 4 out of 5 stars
By Chaii on Apr 14, 2023

Kinda ok :3

So I live with 5 cats and they all have different opinions of it. Most of them like it while one is not set in stone but I think it depends on the cat. It does have a weird smell but other then that I would give it 4 stars. I think you should mix it with other food and it would be perfect for just a side meal.

Rated 1 out of 5 stars
By jimber4400 on Apr 18, 2023

Good food ripped bags

The food is great my cats love it but I have had ripped bags the last two times I purchased this cat food and never had it replaced or refunded the first time this took place I let it go but this time I'm not going to this is getting ridiculous

Rated 5 out of 5 stars
By Liz on May 25, 2023

Great food

I have multiple cats, multiple ages. They are still deciding if this is their favorite. But none of them are complaining. Which is a good sign.

Rated 2 out of 5 stars
By DEEDEE on Mar 9, 2023

Not the best

For financial reasons, switched cats and a dog to the Maintenance, bad idea. I even blended it with old food for almost 2 weeks on the 2 cats. The smelliest poo litter box and diarrhea, lots of extra fur balls. They did not do well with this food at all. We went back to the brand they were on before in an effort to keep any stomach issues to a minimum. Didn't finish the bag.

Rated 5 out of 5 stars
By Tiffany on Feb 19, 2023

Pleasantly surprised

We got thia dry food on a whim when the normal Meow Mix we get for the outside strays/possums wasn't available. We have one baby, whose inside only, but feed and care for a growing number of outside strays/neighborhood cats. They are all picky eaters and the last bag we had as a stand by they literally wouldn't touch, but devoured this stuff! The price is a little higher but a really great quality food, which I appreciate being able to give those babies. Overall very happy with this and will be purchasing again for our porch crew!