IAMS ProActive Health Adult Indoor Weight & Hairball Care with Chicken & Turkey vs Purina ONE Urinary Tract Health Formula
Order follows the Universal Score — the same deterministic engine, the same rules, for every product. Brands can't pay for placement.
The scores
66
Good · Confidence B
Bowlmark scores are independent opinions based on published label information and cited references. They are educational, not veterinary advice, and no substitute for your vet — especially for medical conditions or prescription diets.
Pillar by pillar
Weighted pillar contributions from each product's stored score — nutritional adequacy, ingredient quality, additives & processing, transparency.
| Metric | Purina ONE | IAMS |
|---|---|---|
| Nutritional adequacy | 35 | 21 |
| Ingredient quality | 9 | 19 |
| Additives & processing | 17 | 20 |
| Transparency | 9 | 6 |
Guaranteed analysis
As printed on each label; dry-matter protein removes the moisture so wet and dry read on the same basis.
| Metric | Purina ONE | IAMS |
|---|---|---|
| Protein | 31% | 30% |
| Fat | 12.5% | 11% |
| Fiber | 2% | 8.3% |
| Moisture | 10% | 10% |
| Protein (dry-matter) | 34.4% | 33.3% |
First five ingredients
Purina ONE
- Corn gluten meal
- ground yellow corn
- chicken
- brewers rice
- wheat flour
IAMS
- Chicken
- Chicken By-Product Meal
- Corn Grits
- Corn Gluten Meal
- Ground Whole Grain Corn
Flags on the label
Purina ONE
- Unnamed animal ingredient ("animal fat")
- corn is the 1st ingredient in a dry cat food
- Synthetic vitamin K3 — questioned safety margin vs natural K sources
IAMS
- No nutritional-adequacy statement
- corn appears as 3 fractions in the top 8
Cite this page
Bowlmark. "Purina ONE Urinary Tract Health Formula vs IAMS ProActive Health Adult Indoor Weight & Hairball Care with Chicken & Turkey." https://www.bowlmark.com/compare/iams-proactive-health-adult-indoor-weight-and-hairball-care-with-chicken-and-turkey-vs-purina-one-urinary-tract-health-formula
- Engine
- Methodology engine v1.1.0 · config 13c99e2f
- Verified
- Last verified August 20, 2026
The engine and config above are the ones stamped on this page's score — the exact pair that produced the number shown.