Hill's Science Diet Adult 1-6 Chicken & Barley Recipe Dry Dog Food
The safest default in this ranking: feeding-trial validated, vet-recommended, 4.7/5 from nearly 4,700 ratings, and about $1.49 per 1,000 kcal. The ingredient panel is unglamorous; the evidence behind it is not.
Score breakdown
The overall score of 84/100 is a weighted sum of the six dimensions below. Each dimension shows what we found in this specific formula.
Weight 30% · Algorithm-computed score 78/100
Algorithm: first ingredient “Chicken” is named whole meat; 1 named animal ingredients in the top five; protein 22.2% on a dry-matter basis (target for this stage: 24%).
Weight 20% · Algorithm-computed score 80/100
Algorithm: first ingredient is a named animal source; among the top five, 0 by-product/unnamed and 0 plant-protein concentrate items.
Weight 18% · Editorially assessed score 92/100
AAFCO statement: Animal feeding tests using AAFCO procedures substantiate that this food provides complete and balanced nutrition for maintenance of adult dogs.. Formulated-to-meet profiles are acceptable but weaker evidence than feeding trials, which caps the score here.
Weight 14% · Editorially assessed score 80/100
One recall event, announced in three waves between January and May 2019: a withdrawal of roughly 22 million cans of Science Diet and Prescription Diet wet dog food for elevated vitamin D traced to a supplier premix error. FDA issued Hill's a warning letter the same year over incoming-ingredient verification. No dry food, cat food or treats were affected, and nothing has been recalled since.
Weight 10% · Algorithm-computed score 97/100
Algorithm: about $1.49 per 1,000 kcal ($ tier), normalized against same-species peers, wet and dry together (cheapest = 100, most expensive ≈ 15).
Weight 8% · Editorially assessed score 94/100
Owner ratings are consistently high across major retailers, with few recurring palatability complaints.
Pros and cons
What we like
- Feeding-trial validated, not just formulated to meet profiles - the strongest adequacy evidence in this category
- 4.7/5 across roughly 4,700 Chewy ratings and the most consistently vet-recommended food here
- About $1.49 per 1,000 kcal from a 35 lb bag, which is genuinely cheap for a research-backed formula
- Moderate 20% protein and 11.5% fat suits the average adult dog better than a 38% performance food
What we don't
- Brewers rice, corn protein meal and soybean meal sit in the first eight ingredients
- 20% protein is unremarkable on paper - the DMB figure is about 22%, below this ranking's average
- The 2019 vitamin D recall was the largest of its kind in US pet food history, even though it did not touch dry food
Ingredients & nutrition analysis
The first five ingredients tell most of the story:
Hill's is the only brand here whose entire retail line is substantiated by AAFCO feeding trials rather than formulation math, and it employs board-certified veterinary nutritionists full time. That is why this food scores 92 on standards despite a label that opens with chicken and then moves quickly into barley, brown rice, brewers rice and wheat.
The 20% protein looks low next to a 38% Orijen, and on a dry-matter basis it is about 22% - modest but adequate for maintenance. What you are buying is consistency and research depth at roughly $1.49 per 1,000 kcal, which is cheaper per calorie than most premium foods by a factor of two. The 2019 vitamin D recall is the one black mark, and it involved wet food only.
Alternatives to consider
Other products ranked in Best Dry Dog Food:
85/ 100 Blue Buffalo Wilderness Salmon Recipe High-Protein Adult Dry Dog Food
84/ 100 Wellness Complete Health Grain-Free Deboned Chicken & Chicken Meal Recipe
Frequently asked questions
Is Hill's Science Diet Adult 1-6 Chicken & Barley Recipe Dry Dog Food right for my pet?
It is our pick for: Average adult dogs, and owners who want the option their vet is most likely to endorse. It is not the best fit for: Owners who shop on ingredient prestige, and highly active dogs that need more protein and fat. Individual animals vary — if your pet has diagnosed health conditions, confirm the choice with your veterinarian.
How much does Hill's Science Diet Adult 1-6 Chicken & Barley Recipe Dry Dog Food cost?
Expect roughly $2.49 per pound ($ tier) depending on bag size and retailer. Check the linked retailers for current pricing; our value score compares cost per 1,000 kcal against comparable formulas.
How should I switch to this food?
Transition over 7–10 days, mixing increasing proportions of the new food into the old. Go slower for puppies, kittens, seniors and pets with sensitive stomachs, and watch stool quality during the switch.
Score history
Every change to this product's score is logged here, including the reason. Scores are recomputed by algorithm whenever ingredient or price data changes.
- 2026-10-19 — Product data refreshed: guaranteed analysis, ingredient list, AAFCO statement, calorie content and price replaced with values verified against the manufacturer's current US label and current US retail listings. Editorial scores for standards, safety and reviews reassessed against that data.