An honest, in-depth look at one of the most popular cat litters on the market — what it does well, where it falls short, and who it’s best suited for.
★★★★★ 4.7 / 5 · 40,000+ reviews | 40 lb bag
| Dust level 99.9% dust-free | Clumping Hard & solid | Scent Unscented | Households Single & multi-cat |
What is Dr. Elsey’s Ultra?
Dr. Elsey’s is a brand founded in 1987 by a feline-only veterinarian. The Ultra formula is their best-selling product — a 100% sodium bentonite clay litter engineered with a medium-grain size that balances clumping strength, odor control, and low tracking. It’s designed to work in standard, sifting, and mechanical litter boxes alike.
Performance breakdown
The clumping performance is where this litter consistently earns its reputation. Clumps form quickly on contact and stay solid enough to scoop cleanly without crumbling — meaning less mess and less waste per scoop. The medium-grain formula also prevents moisture from soaking through to the bottom of the tray, which is a common complaint with lighter litters.
Odor control is strong for an unscented litter. Many cat owners with multiple cats report that even after a day of skipped scooping, the litter box stays noticeably fresher compared to other brands they’ve tried.
“Even though the box with Dr. Elsey’s litter missed a day of cleaning and gets about 3 times as much use as the other boxes — it didn’t smell. At all.”
— Verified Amazon buyer