4.6(3,979)Amazon rating$8.972,000+ bought last month
Our verdict
Pet-Ag PetLac Powder is a budget friendly milk replacer built around FOS and live microorganisms for digestion, and a 4.6 star average across 3,979 reviews backs it up as a trusted staple for breeders.
Breeders and foster caregivers feeding orphaned puppies, weaning litters, or adding extra nutrition for older dogs, at one of the lower price points in the category.
Skip if
Your dog has a diagnosed milk sensitivity, since this formula is dairy based, or you'd rather use a ready to feed liquid instead of mixing a powder.
Form Powder
Benefits Promotes Puppy Growth And Aids Digestion
Best for Growth
Breed size Extra Small
Weight 0.81 Pounds
Priced 65% below the category median ($25.99 across 21 tracked models)
Our scorecard
4.6/5overall
Owner rating4.6/5
4.6 average across 3,979 owner ratings
Popularity3.8/5
3,979 owner reviews, more than most models here
The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog food and health supplements we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.
Overview
['This 10.5 oz container of Pet-Ag PetLac Powder is formulated around FOS, a prebiotic fiber, and live naturally occurring microorganisms, aimed at supporting digestion alongside basic nutrition. Pet-Ag lists the recommended uses broadly, covering nursing supplementation, orphaned puppies, weaning assistance, and even additional nutrition for older dogs.', "The label markets the core benefit as promoting puppy growth and aiding digestion, and it's rated for all breed sizes rather than one specific size class. It's made in America and sold in a bottle or can style container.", 'At $8.97, this is the least expensive option among the milk replacers reviewed here, and with 3,979 reviews averaging 4.6 stars it has both a strong track record and broad appeal for its price point.']
Pros
One of the most affordable milk replacers in this lineup
Formula includes FOS and live microorganisms aimed at digestion
Rated for all breed sizes, not just one size class
Made in America
Strong 4.6 star average across nearly 4,000 reviews
Cons
Milk based formula, so it's not an option for a dog with a diagnosed milk allergy
Powder requires mixing rather than ready to feed convenience
Broad recommended uses, nursing, weaning, and older dog nutrition, mean it's not narrowly optimized for one life stage
Specifications
Form
Powder
Benefits
Promotes Puppy Growth And Aids Digestion
Best for
Growth
Breed size
Extra Small
Weight
0.81 Pounds
Performance notes
The FOS and live microorganism combination targets gut health support during a vulnerable stage, whether that's a newborn puppy or a weaning litter transitioning to solid food. Because Pet-Ag also lists additional nutrition for older dogs as a use case, the formula appears designed with some flexibility beyond just the newborn window, though a vet is the right resource for guiding use in an older dog with any specific need.
What buyers say
Nearly 4,000 reviews at a 4.6 star average, combined with 2,000 units reported bought in the past month, points to PetLac being one of the more consistently repurchased milk replacers in this category.
FOS stands for fructooligosaccharide, a prebiotic fiber. Pet-Ag includes it along with live naturally occurring microorganisms to support digestion in young or nursing puppies.
Can this be used for adult or senior dogs?
Pet-Ag lists additional nutrition for older dogs among the recommended uses, but for a specific health concern in an adult dog, check with your vet before adding a milk replacer to their diet.
Does it contain milk?
Yes, the allergen information lists milk, so it's not suitable for a dog with a diagnosed dairy sensitivity.
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