4.7(16,200)Amazon rating$34.9910,000+ bought last month
Our verdict
Hill's Science Diet Adult Indoor is a chicken formula built around DHA and prebiotic fiber for indoor cats, and its 4.7 star average across 16,200 reviews makes it the most reviewed product in this set.
Priced 29% above the category median ($27.08 across 139 tracked models)
Our scorecard
4.7/5overall
Owner rating4.7/5
4.7 average across 16,200 owner ratings
Popularity4.4/5
16,200 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 and cat food, health, gear and grooming 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 7 lb bag of Hill's Science Diet Adult Indoor is a chicken based recipe formulated with DHA from fish oil and fructooligosaccharides, commonly known as FOS, a type of prebiotic fiber. Hill's markets it around easy litter box cleanup for adult cats living an indoor lifestyle.", "The formula is labeled dairy free and is positioned as promoting easy digestion, litter box cleanup, and lean muscle support, making it a maintenance formula geared toward the realities of indoor cat life. It's meant for adult cats between 1 and 6 years old.", "At $34.99 for a 7 lb bag, it's priced similarly to Hill's other indoor formulas, and with 16,200 reviews and a 4.7 star average, it's the single most reviewed product in this group."]
Pros
DHA from fish oil and FOS prebiotic fiber included in the recipe
Specifically formulated for indoor adult cats
Dairy free labeling
Largest review base in this set at 16,200 reviews with a 4.7 star average
Supports lean muscle alongside digestion and litter box benefits
Cons
Formulated for the 1 to 6 age range, not kittens or seniors
Chicken based recipe won't suit cats with poultry sensitivities
Indoor lifestyle focus means it's less tailored to outdoor or highly active cats
The granule shaped kibble includes DHA from fish oil along with FOS, a prebiotic fiber that Hill's ties to easier digestion and litter box cleanup. Together with the lean muscle support claim, it reads as a maintenance formula built around the everyday needs of an indoor adult cat rather than a specialty or medical diet.
What buyers say
With 16,200 reviews at a 4.7 star average and about 10,000 bought in the past month, this is the highest volume formula in this group, pointing to strong, sustained demand among indoor cat owners.
Hill's includes DHA from fish oil and FOS, a prebiotic fiber, which the brand ties to helping support easy digestion and litter box cleanup for indoor adult cats.
Is this formula only for indoor cats?
It's specifically marketed around an indoor lifestyle, with benefits like litter box cleanup that matter most to cats that spend most of their time inside.
How does this compare to Hill's other adult indoor formulas?
With 16,200 reviews at 4.7 stars, it's the most reviewed product in this set, suggesting it's one of Hill's more established and widely purchased indoor adult recipes.
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