Kirkland Signature Pet Food Review

Made by Diamond Pet Foods in US.

Average score: 55/100 across 13 pet food products.

Costco house brand. Co-manufactured by Diamond Pet Foods. Pricing-to-quality is unusually strong — same plants, fewer marketing dollars. Costco-exclusive: Amazon listings are third-party resellers at markup.

Top Kirkland Signature products

1. Pâté 3-Flavour Variety Pack Wet Food for Adult cats — 95/100
2. Kirkland Signature Healthy Weight — 54/100
3. Kirkland Signature Puppy Formula Chicken, Rice and Vegetable — 54/100
4. Kirkland Signature Small Formula Chicken and Vegetable — 54/100
5. Kirkland Signature Super Premium Adult Dog Chicken, Rice and Vegetable — 54/100

All Kirkland Signature products (13)

• Kirkland Signature Super Premium Adult Dog Lamb, Rice and Vegetable — 54/100
• Kirkland Signature Super Premium Mature Dog Chicken, Rice and Egg — 54/100
• Kirkland Signature Nature's Domain Beef and Sweet Potato — 50/100
• Kirkland Signature Nature's Domain Puppy — 50/100
• Kirkland Signature Nature's Domain Salmon and Sweet Potato — 50/100
• Kirkland Signature Nature's Domain Small Breed Salmon and Lentil — 50/100
• Kirkland Signature Nature's Domain Turkey and Ancient Grains — 50/100
• Kirkland Signature Nature's Domain Turkey and Sweet Potato — 50/100

Frequently asked questions

Who makes Kirkland Signature pet food?

Kirkland Signature is manufactured by Diamond Pet Foods.

Where is Kirkland Signature made?

Kirkland Signature pet food is made in US.

Is Kirkland Signature WSAVA-aligned?

Kirkland Signature is not on our WSAVA-aligned shortlist. That doesn't automatically mean the food is poor quality — many strong brands haven't pursued WSAVA recognition — but it means we lack independent confirmation of feeding-trial validation and on-staff veterinary nutritionist staffing.

Has Kirkland Signature ever been recalled?

No Kirkland Signature recall appears in FDA's pet food recall list for the last five years. A recall filed under a parent company's or co-packer's name may not be linked here; FDA's recall list is the definitive source.

How does Kirkland Signature score in our analysis?

Kirkland Signature averages 55/100 across 13 products in our catalog. Individual product scores combine ingredient quality, AAFCO compliance, and controversial-additive severity. See the methodology page for the full algorithm.

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