HEAD-TO-HEAD COMPARISON
Litter-Robot 4 vs IRIS Top Entry Cat Litter Box
We compare the Litter-Robot 4 and IRIS Top Entry Cat Litter Box head-to-head on performance, features, value, and more. Here's which one wins.
Our Pick
Check Price on AmazonLitter-Robot 4
Scored 9.2/10 in our testing
Best Overall Self-Cleaning
Litter-Robot 4
Automatic rotating globe sifts waste into sealed drawer with app tracking
Overall:9.2/10Winner
Check price on Amazon Best Budget Hooded
IRIS Top Entry Cat Litter Box
Affordable top-entry design with grooved lid for paw cleaning
Overall:8.8/10
Check price on Amazon Score Breakdown
| Litter-Robot 4 | Category | IRIS Top Entry Cat Litter Box |
|---|---|---|
| 9.6/10 ✓ | Performance | 8.6/10 |
| 9.6/10 ✓ | Features | 8.2/10 |
| 9.2/10 ✓ | Ease of Use | 9/10 |
| 7.8/10 | Value | ✓ 9.6/10 |
| 9.2/10 ✓ | Overall | 8.8/10 |
Specs Comparison
| Litter-Robot 4 | Spec | IRIS Top Entry Cat Litter Box |
|---|---|---|
| See Amazon for full specs | Details | See Amazon for full specs |
Litter-Robot 4
Pros
- + Fully automatic waste sifting
- + WiFi app with usage tracking
- + Sealed waste drawer controls odor
- + Multi-cat weight detection
Cons
- − Premium price
- − Large footprint
IRIS Top Entry Cat Litter Box
Pros
- + Grooved lid catches litter from paws
- + Top-entry keeps dogs out
- + Large interior space
- + Budget-friendly price
Cons
- − Plastic feels less premium than Modkat
Our Verdict
Based on our scoring, the Litter-Robot 4 comes out on top with an overall score of 9.2/10. The gold standard automatic litter box — set it and forget it for days.
Buy the Litter-Robot 4 on AmazonRead the full Best Self-Cleaning Litter Boxes 2026 guide for complete reviews of all 5 products.