HEAD-TO-HEAD COMPARISON
Nature's Miracle High-Sided Litter Box vs IRIS Top Entry Cat Litter Box
We compare the Nature's Miracle High-Sided Litter Box and IRIS Top Entry Cat Litter Box head-to-head on performance, features, value, and more. Here's which one wins.
Best Overall
Nature's Miracle High-Sided Litter Box
Extra-large open box with high sides to contain litter scatter from big cats
Overall:8.8/10
Check price on Amazon Best Overall
IRIS Top Entry Cat Litter Box
Grooved lid catches litter from paws as cats exit — minimal tracking
Overall:8.8/10
Check price on Amazon Score Breakdown
| Nature's Miracle High-Sided Litter Box | Category | IRIS Top Entry Cat Litter Box |
|---|---|---|
| 9/10 | Performance | 9/10 |
| 8.5/10 | Features | ✓ 9/10 |
| 8.5/10 | Ease of Use | 8.5/10 |
| 9/10 | Value | 9/10 |
| 8.8/10 | Overall | 8.8/10 |
Specs Comparison
| Nature's Miracle High-Sided Litter Box | Spec | IRIS Top Entry Cat Litter Box |
|---|---|---|
| 23 x 18.5 x 11 inches | Size | Top entry with grooved lid |
| High-walled — reduces scatter | Sides | 20.5 x 16 x 14.5 inches |
| Antimicrobial plastic | Material | Snap-on lid, no-scatter walls |
Nature's Miracle High-Sided Litter Box
Pros
- + 23 inches — room for the largest cats
- + 11-inch high sides reduce scatter
- + Antimicrobial odor-resistant plastic
Cons
- − Open top — no odor containment
- − Heavy when filled with litter
- − Too large for small bathrooms
IRIS Top Entry Cat Litter Box
Pros
- + Grooved lid eliminates tracking
- + Dog-proof entry
- + Snap-on lid for easy cleaning
Cons
- − Kittens and elderly cats may struggle to jump in
- − Interior is dark — some cats resist
- − Lid grooves need regular cleaning
Read the full Best Large Litter Boxes for Big Cats 2026 guide for complete reviews of all 5 products.