When SiiPet announced the LitterLens at CES 2026, the pitch raised eyebrows: an AI camera that mounts inside your cat’s litter box, analyzes their stool, and sends health reports to your phone. It sounds like something from a parody startup pitch — until you realize that changes in a cat’s stool are one of the earliest indicators of kidney disease, inflammatory bowel disease, parasites, and food intolerances.
Cats are notoriously good at hiding illness. By the time most owners notice something is wrong, conditions have often progressed significantly. The LitterLens aims to catch problems weeks or months earlier by doing the one thing no cat owner actually wants to do: closely examine what’s in the litter box every single day.
We’ve been tracking the LitterLens since its CES debut and have compiled everything we know from hands-on demonstrations, early user reviews, and veterinary feedback.
SiiPet LitterLens at a Glance
Price: $149 USD (~$199 CAD)
Subscription: $7.99/month for AI health analysis (basic camera free)
Compatibility: Fits most open-top and front-entry litter boxes
Connectivity: Wi-Fi (2.4 GHz)
Multi-cat: Up to 6 cats via AI recognition
Power: USB-C (cable included, requires nearby outlet)
What the LitterLens Actually Does
The Hardware
The LitterLens is a small camera module (roughly the size of a webcam) that clips onto the rim of your existing litter box. It includes:
- 1080p camera with night vision (infrared LEDs for low-light litter box interiors)
- Wide-angle lens covering the entire litter surface
- Motion sensor that triggers recording when a cat enters
- Temperature/humidity sensor (monitors litter box environment)
- USB-C power (no battery option — this needs to be plugged in)
The camera is sealed against dust and moisture, which is essential given where it lives. SiiPet rates it IP54, which should handle litter dust and the occasional splash.
The AI Analysis
Here’s where it gets interesting. After each visit, the LitterLens captures images and runs them through SiiPet’s cloud-based AI model, which analyzes:
- Stool consistency — rated on the Purina Fecal Scoring System (1-7 scale, where 2-3 is ideal)
- Color changes — dark/tarry stools, pale stools, or unusual colors can indicate specific conditions
- Blood detection — the AI flags potential blood in stool (though this needs vet confirmation)
- Frequency — how often each cat visits, and whether patterns change
- Duration — how long they spend in the box (straining can indicate urinary or GI issues)
- Volume estimation — significant decreases in output can indicate dehydration or obstruction
Multi-Cat Recognition
The LitterLens identifies individual cats using a combination of physical characteristics (size, color patterns, tail shape) captured on camera. SiiPet claims 90%+ accuracy after a 2-week learning period. In households with very similar-looking cats, accuracy drops — you may need to supplement with different collar tags.
Setting It Up
Installation is straightforward:
- Clip the camera to your litter box rim (adjustable mount fits boxes up to 5 cm thick)
- Connect USB-C power and run the cable away from curious paws
- Download the SiiPet app and connect to Wi-Fi
- Register your cats — enter names, approximate weight, and photos
- Wait 7-14 days for the AI to build individual baselines
The biggest practical concern is cable management. Cats will chew exposed cables, so you need to route the USB-C cord carefully — through a cord protector or along a wall where it’s inaccessible.
What the App Shows You
The SiiPet app (iOS and Android) provides:
Daily Health Dashboard
Each cat gets a health score out of 100, updated daily. The score factors in stool consistency, visit frequency, duration, and any flagged anomalies. A consistently high score (80+) means things look normal. Drops below 60 trigger alerts.
Trend Graphs
Weekly and monthly views of all tracked metrics. This is where the real value lives — a single unusual visit might mean nothing, but a downward trend over two weeks is worth a vet conversation.
Health Alerts
Push notifications for:
- Significant score drops
- Potential blood detection
- Unusual visit frequency (too many or too few)
- Extended straining
- Dramatic consistency changes
Vet Reports
You can generate PDF reports to share with your veterinarian, showing 30/60/90-day trends with supporting images. Several vets we’ve spoken to say this kind of longitudinal data is genuinely useful — it’s information they never get from annual checkups.
What Works Well
Genuinely Useful Health Data
The core value proposition holds up. Cat owners who’ve used the LitterLens for 3+ months consistently report that it caught health changes they would have missed:
- One early reviewer caught a urinary infection in their cat based on frequency alerts — 5 visits in one day when the normal was 2-3
- Another noticed a gradual consistency decline over 10 days that turned out to be early inflammatory bowel disease
- Multiple users report it reduced anxiety about their cats’ health (“I used to worry constantly, now I just check the app”)
Non-Invasive Monitoring
The camera mounts externally. Your cat doesn’t have to wear anything, step on anything, or change their routine in any way. This is a big advantage over smart collars or scale-based monitoring — zero compliance issues.
The Subscription Is Actually Worth It
We’re usually skeptical of subscription models for pet hardware, but the AI analysis is the entire point of this product. Without it, you just have a litter box camera (which exists for $30). The $7.99/month buys you the stool analysis, health scoring, trend tracking, and vet reports.
Limitations and Concerns
Privacy Considerations
There’s a camera in your cat’s litter box — which is often in a bathroom, laundry room, or bedroom. SiiPet says the camera only activates on motion detection and images are processed in the cloud then deleted within 24 hours. But if camera placement is a concern for your household, this is worth considering.
Accuracy Isn’t Perfect
AI stool analysis is still an emerging technology. SiiPet claims 85% accuracy on consistency scoring and 78% on anomaly detection. That means false positives will happen — don’t panic at every alert. Treat alerts as “worth keeping an eye on” rather than diagnoses.
Covered Litter Boxes Are Tricky
If you use a covered/hooded litter box, the camera placement is challenging. The wide-angle lens needs a clear view of the litter surface, and covered boxes limit mounting options. Top-entry boxes are a complete non-starter.
No Offline Mode
All AI analysis happens in the cloud. No internet = no health reports. The camera will still record locally during brief outages, but extended disconnection means gaps in your data.
Litter Dust Is the Enemy
Despite the IP54 rating, several early users report needing to clean the lens weekly. Clumping clay litter generates significant dust, and a dusty lens means blurry images and reduced AI accuracy. Crystal or pine litter causes fewer issues.
LitterLens vs. Competitors
vs. Petivity Smart Litter Box Monitor ($299 CAD)
Petivity focuses on weight tracking and visit patterns — it doesn’t analyze stool at all. The LitterLens focuses on visual stool analysis but doesn’t weigh your cat. They’re complementary rather than competitive. If you had to pick one, Petivity’s weight tracking has more established veterinary backing, but LitterLens offers information you literally can’t get any other way.
vs. LuluPet AI Litter Box ($399 CAD)
LuluPet is a complete smart litter box with AI analysis built in. It’s more expensive but you don’t need a separate litter box. If you’re replacing your litter box anyway, LuluPet is the integrated option. If you want to add monitoring to an existing box you like, LitterLens is the retrofit choice.
vs. Just… Checking the Litter Box Yourself
Honestly? If you’re diligent about checking your cat’s litter box daily and know what to look for, you can get similar information for free. The LitterLens’s advantage is consistency (it never forgets to check) and trending (it’s better at spotting gradual changes than human memory).
Who Should Buy the SiiPet LitterLens?
Strong recommendation for:
- Owners of cats with chronic conditions (IBD, kidney disease, diabetes) who need daily monitoring
- Multi-cat households where it’s hard to track individual health
- Anxious pet parents who want peace of mind
- Owners of senior cats (7+ years) entering the age of increased health risk
Skip it if:
- You have a covered/top-entry litter box and can’t switch
- You’re uncomfortable with a camera in that location
- You have one healthy young cat and check the litter box daily
- Unreliable internet would make cloud processing frustrating
The Bottom Line
The SiiPet LitterLens is a genuinely novel product that provides health information pet owners couldn’t easily access before. It’s not a replacement for veterinary care — but it’s a remarkably effective early warning system that turns the most mundane part of cat ownership (cleaning the litter box) into a passive health monitoring routine.
At $199 CAD plus $7.99/month, it’s a meaningful investment. But for cats with health conditions, senior cats, or multi-cat households where tracking individual health is difficult, the early detection value can easily pay for itself in avoided emergency vet bills.
Our Rating: 4 out of 5 stars — innovative health monitoring with genuinely useful AI analysis, held back by covered-box limitations and the ongoing subscription cost.
Prices are in Canadian dollars. This review contains affiliate links that support our ongoing research. We recommend products based on thorough research and genuine utility for pet owners.