As a soon-to-be mom of two, I learned (the hard way!) to always be prepared with baby formula on hand. The recent infant formula shortages are still fresh in my mind, and I’m not taking any chances this time around.

Having one little one already (and another on the way), I’ve realized that buying in bulk is one of the easiest ways to save time and money. And infant formula is no exception. Costco.com carries several infant formula brands, so I took a closer look at the top four to see how they stack up. If I’m spending money, I want the best value and the best quality. Here’s my honest take on Bobbie, Kirkland, Enfamil, and Similac.
Quick legend:🥇category winner |🥈category runner-up

Criteria #1: Nutrition

Since breast milk and/or formula provides most of your baby’s calories in their first year, good nutrition is non-negotiable. My criteria:

• Quality carbohydrates, proteins, and fats to ensure my baby gets a strong start.
• Modeled after breast milk—since that’s what nature intended. This means the formula should have a whey to casein ratio of 60:40 (like mature breast milk) which is easier for little tummies to digest. 
• No palm or palm olein oil, since it may cause firm 💩(which you don’t want to deal with).
• European-style formulas (aka those modeled after European guidelines, because they are not allowed to use corn syrup and must include a specific amount of DHA, a fatty acid found in breast milk that supports brain and eye development).
• No soy since my first baby had a sensitivity.
• Transparent ingredients lists with the exact amounts used

🥇 Bobbie Organic Original:

• Protein: 60:40 whey-to-casein ratio (same as that of mature breastmilk) 
• Carbohydrate: 100% lactose.
• Fat: High oleic sunflower and safflower oil, low erucic acid rapeseed oil, and coconut oil.
• Extra nutrition: 20 mg/100 kcal of plant-based omega-3 DHA to support brain development, meeting European standards. 
• Palm or palm olein oil? No.
• Soy Allergens? No.

🥈 Kirkland Signature ProCare:

• Protein: 52:48 whey-to-casein ratio.
• Carbohydrate: 100% lactose.
• Fat: High oleic sunflower and safflower oil, soy oil, and coconut oil.
• Extra nutrition: Omega-3 DHA to support brain development, 2′-FL and LNnt Human Milk Oligosaccharides (HMOs) for immune support and digestive health, and lutein for eye health. 
• Palm or palm olein oil? No.
• Soy? Yes

Enfamil NeuroPro Care:

• Protein: 60:40 whey-to-casein ratio (same as that of mature breastmilk) 
• Carbohydrate: 100% lactose. 
• Fat: Palm oil, coconut oil, soy oil, and high oleic sunflower oil.
• Extra nutrition: Milk Fat Globule Membrane (MFGM) and omega-3 DHA for cognitive function (unspecified amount), beta carotene for eye health, and HMOs and HuMO6 for immune and digestive health.
• Palm or palm olein oil? Yes (palm olein).
• Soy? Yes

Similac 360 Total Care:

• Protein: 52:48 whey-to-casein ratio.
• Carbohydrate: 100% lactose. 
• Fat: High oleic safflower oil, soy oil, coconut oil.
• Extra nutrition: Blend of 5 HMO prebiotics for immune and digestive health, omega 3 DHA for cognitive function (unspecified amount) , and lutein and vitamin E for eye health.
• Palm or palm olein oil? No.
• Soy? Yes

Criteria #2: Ingredient quality and safety 

Where and how a formula is made truly matters, so I look for brands that are upfront about ingredient quality and follow strict safety standards—bonus points if they meet US and many EU regulations or guidelines.

🥇Bobbie Organic Original:

• Organic?: Yes, USDA organic certified as well as certified to meet EU organic standards (via equivalency), which means it’s made without GMOs, antibiotics, hormones, or synthetic pesticides (like glyphosate). 
• Made without: Maltodextrin, fillers, soy fat blend, palm or palm olein oil, and corn syrup.
• Certifications: Clean Label Purity Award and Pesticide Free Certification.
• Additional quality and safety measures: Over 2,000 quality checks per batch. Recipe and ingredients are tested and backed by clinical studies, rigorous heavy metal testing, and transparent ingredient sourcing with full supply chain oversight.
• Owns Manufacturing Facility? Yes.
• Bonus: Milk is sourced from grass-fed cows on small family-run farms, and the organic fat blend is made without inorganic bleaching agents, chemical solvents (like hexane), or synthetic pesticides. 

Kirkland Signature ProCare: 

• Organic?: No.
• Made without: Palm or palm olein oil, artificial growth hormones, gluten, and GMOs.
• Certifications: None.
• Additional quality and safety measures: Unknown.
• Owns Manufacturing Facility? Yes.
• Bonus: None.

Enfamil NeuroPro Care:

• Organic?: No.
• Made without: GMOs.
• Certifications: Non-GMO.
• Additional quality and safety measures: Unknown.
• Owns Manufacturing Facility? Yes.
• Bonus: None.

Similac 360 Total Care:

• Organic?: No.
• Made without: Palm or palm olein oil, artificial growth hormones, and GMOs.
• Certifications: Non-GMO.
• Additional quality and safety measures: Unknown.
• Owns Manufacturing Facility? Yes.
• Bonus: None.

Criteria #3: Consistency and mixability

🥇Bobbie Organic Original:

When I tested Bobbie’s formula, I was impressed with how easily it mixed. After mixing it with water and shaking the bottle, there were no clumps and very little foam. 

Kirkland Signature ProCare:

Mixing the Kirkland Signature ProCare formula was frustrating—no matter how much I shook the bottle, it always left clumps of powder at the bottom and never fully dissolved.

🥈Enfamil NeuroPro Care:

The Enfamil NeuroPro Care formula was easy to mix and provided little to no foam.

Similac 360 Total Care:

While the Similac initially had little to no foam, it took a lot of shaking to fully dissolve the formula, which ended up creating a noticeable layer of foam on top.

Criteria #4: Cost

Bobbie Organic Original:

$39.99 per 2-pack of 14.1 oz cans, or $1.42 per oz. 

🥇 Kirkland Signature ProCare:

$29.99 per 42 oz can, or $0.71 per oz. 

🥈 Enfamil NeuroPro Care:

$56.99 per 2 pack of 20.7 oz cans, or $1.38 per oz.

Similac 360 Total Care:

$55.99 per 40 oz can, or $1.40 per oz.

Run to Costco.com now and grab Bobbie Organic!

Not only is Bobbie the first organic formula available at Costco.com, but it also stands out for its exceptional nutritional, ingredient, and manufacturing quality, all offered at a great price.

✅ High nutritional quality, with a recipe modeled after breast milk 

✅ Omega-3 DHA fatty acids at levels that meet EU standards

✅ USDA Organic, Clean Label Purity Award, and Pesticide Free Certification

✅ Gentle on digestion

✅ No maltodextrin, fillers, soy allergens, palm or palm olein oil, or corn syrup

✅ Smooth mixing and no clumps

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