Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary) vs IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System
Side-by-side comparison of scores, ingredients, prices and real customer feedback for Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary) and IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System.
Last verified: 07 Apr 2026 · Based on 24 reviews
Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary) scores 71.0/100 vs IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System at 71.0/100. Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary) wins on ingredient quality, value for money, transparency. IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System is stronger on nutritional value.
Which is better: Harringtons Complete Dry Se... or IAMS Senior Small Medium Co...?
Harringtons edges ahead on value (85 vs 76) and offers a larger 12kg bag at £25.93, making it the better pick for multi-dog households or those buying in bulk. IAMS suits owners of small or medium breeds with dental concerns, thanks to its DentalCare system in a more manageable 3kg pack.
— AIScored Editorial Team
How Do the Scores Compare?
Harringtons Complete Dry Se...
HARRINGTON
|
IAMS Senior Small Medium Co...
IAM
|
|
|---|---|---|
| Overall Score | 71.0 | 71.0 |
| Ingredient Quality |
68.0/100
Best
|
65.0/100 |
| Nutritional Value | 62.0/100 |
68.0/100
Best
|
| Value for Money |
85.0/100
Best
|
76.0/100 |
| Transparency |
72.0/100
Best
|
62.0/100 |
| Palatability |
84.0/100
Best
|
83.0/100 |
| Best Price | £25.93 Amazon UK → |
£10.50
Amazon UK →
Cheapest
|
| Form | ||
| Dose | ||
| Third-Party Tested | ✗ No | ✗ No |
| Reviews Analysed | 12 | 12 |
Harringtons Complete Dry Senior ...
Pros
- ✓Named chicken as primary protein — no vague meat derivatives or by-products
- ✓Wheat-free and free from artificial colours, flavours, and preservatives
- ✓High palatability: dogs consistently reported to enjoy it, including fussy eaters
- ✓Excellent value for money relative to ingredient quality — subscription further reduces cost
Cons
- ✗No mention of glucosamine or chondroitin — joint support absent for a senior-labelled product
- ✗Listed as suitable for puppy, adult, and senior — senior-specific formulation differentiation unclear
- ✗One verified review reported worm contamination in the package — isolated but concerning
- ✗Several Amazon reviews appear cross-listed from different Harringtons variants (puppy, salmon), reducing review reliability
Best For
IAMS Senior Small Medium Complet...
Pros
- ✓Strong palatability reported consistently — including fussy small breeds and multi-dog households
- ✓Named chicken as primary protein source; no generic meat derivatives or by-products listed
- ✓Wheat-free formula appropriate for dogs with grain sensitivities
- ✓Dental care system addresses a genuine senior health concern
Cons
- ✗Produced in a facility that handles wheat — cross-contamination risk for dogs with confirmed wheat allergy
- ✗No disclosed quantities for joint-support ingredients (glucosamine/chondroitin) despite joint health claim
- ✗Mid-market formulation — ingredient quality is decent but not premium (no fresh/whole meat, likely uses dried chicken)
- ✗Reviews are largely generic ('great food', 'dogs love it') with limited detail on digestibility or stool quality
Best For
What does the data say about Harringtons Complete D... vs IAMS Senior Small Medi...?
Both Harringtons and IAMS Senior land at the same overall score of 71/100, which makes this less a question of which is better and more a question of which fits your dog's specific situation. The clearest practical difference is the DentalCare system in the IAMS — a kibble shape and texture designed to help reduce tartar build-up, which is a genuine concern in smaller breeds that tend to be more prone to dental disease. Harringtons has no equivalent feature, but compensates with a substantially better value score (85 versus 76) and, at £25.93 for 12kg compared to IAMS's £10.50 for 3kg, works out considerably cheaper per kilogram. Both use named chicken as the primary protein and are wheat-free, and neither discloses glucosamine or chondroitin quantities — a real gap for a senior-labelled product from either brand.
If you have a larger dog, a multi-dog household, or you're simply watching your monthly spend, Harringtons is the more economical pick and covers senior dogs aged seven-plus without fuss. The IAMS is better suited to small and medium breeds where dental health is a priority — the DentalCare system does address something Harringtons simply doesn't.
One important caveat for the IAMS: despite being labelled wheat-free, it's produced in a facility that handles wheat. For a dog with a confirmed wheat allergy rather than a mild sensitivity, that cross-contamination risk makes Harringtons the safer option.
Harringtons Senior Chicken & Rice is a UK-made complete dry food featuring chicken as the primary named protein source, with no artificial additives, no wheat, and no vague meat by-products — a solid mid-market offering for senior dogs.
What are the key differences?
Frequently Asked Questions
Which is better, Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary) or IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System? ▼
Is Harringtons Complete Dry Senior Dog Food Chicken & Rice 12kg - Made with All Natural Ingredients (Packaging may vary) worth the price compared to IAMS Senior Small Medium Complete Dry Dog Food Chicken 3kg - With DentalCare System? ▼
Which has fewer side effects? ▼
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What the Data Says
Which senior dog food brands use named meat sources vs 'derivatives'?
All top 10 senior dog foods in our database use named meats and zero by-products. Across 20 scored products, the pattern is consistent: higher ingredient quality tracks with specific protein sourcing.
The top five by overall score:
- Naturediet Feel Good Wet (82/100, IQ 83) — chicken and turkey
- Pooch & Mutt Adult Minis (78/100, IQ 81) — chicken
- Pooch & Mutt Complete Senior (77/100, IQ 78) — chicken
- Pooch & Mutt Slim & Slender (77/100, IQ 79) — chicken
- Skinner's Field & Trial Light & Senior (74/100, IQ 70) — chicken
The ingredient quality spread is 18 points (83 down to 65), and it tracks closely with how specific brands are about their protein sources.
Why it matters: "meat and animal derivatives" is a legal catch-all that lets manufacturers swap protein sources between batches. Named meats — "chicken 26%" or "turkey 30%" — lock the recipe down. For senior dogs with sensitive digestion, that consistency matters. Check the first three ingredients: if you see a specific animal name with a percentage, you know what your dog is eating.
Does senior dog food need to be grain-free?
The data says no. Our top-scoring senior dog food — Naturediet Feel Good Wet at 82/100 — contains grains and still outperforms every grain-free option in the category.
The top five is split on grain status:
- Naturediet Feel Good Wet (82/100, IQ 83) — not grain-free
- Pooch & Mutt Adult Minis (78/100, IQ 81) — grain-free
- Pooch & Mutt Complete Senior (77/100, IQ 78) — grain-free
- Pooch & Mutt Slim & Slender (77/100, IQ 79) — grain-free
- Skinner's Field & Trial (74/100, IQ 70) — gluten-free, not grain-free
What actually separates good from mediocre senior dog food: named meat content, absence of by-products, and overall formulation quality. Grains like brown rice and oats provide fibre and slow-release energy that many senior dogs handle well.
The grain-free trend started from concerns about specific grain allergies — real, but uncommon. Unless your vet has identified a grain sensitivity, ingredient quality scores are a better predictor of food quality than the grain-free label alone.
Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.
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