148 grams. That's what came out of the Roborock S8 Pro Ultra's bin after one run through Murph's peak shedding week, the heaviest single-run number I've logged in the dustbin tally since a Roomba i3 died on our basement steps and left me alone with two dogs, a 1920s bungalow, and enough undercoat to insulate a shed. This is where the robot vacuum reviews and the pet hair solutions and the general home maintenance grind all collide for me, and it's why I keep a running spreadsheet instead of just trusting the marketing copy. If you're about to spend serious money on a smart home tech purchase built entirely around your dog's coat, you want the person who's been weighing dustbins on a kitchen scale, not the person who wrote the box copy.
Quick disclosure before the tally: the vacuum brands and the air purifier I mention below pay me a commission if you buy through my links, including the Roborock S8 Pro Ultra itself. That commission doesn't change what I write here — I've run every one of these machines in my own house, with Murph and Beans as the actual shedding test subjects, and the failures below are the real ones, not the ones a press release would pick.
What a Husky Actually Does to the Roborock S8 Pro Ultra's Side Brush
My house has been the real test track for every bot I've run — two shedding dogs and enough tight corners to trip up anything that hesitates. Between Murph's twice-a-year coat blow and Beans' occasional senior accidents, I needed something that didn't just wander in circles. The Roborock S8 Pro Ultra has been running here since late last summer, straight through this spring, and the dustbin tally on it hasn't lied to me yet.
I started tracking all of this partly because of the X-Sense detector story: my X-Sense Smart Smoke and CO Detector ($65) is solid now, but pairing it took two failed attempts on a 5GHz network before I dropped my phone down to 2.4GHz just to get it talking to the app. Mounting height and placement in an older two-story change how fast that alarm actually reaches you, which is a bigger factor than the unit itself — a whole separate topic I've covered elsewhere. Robot vacuums have that same last-mile friction, and at $1,399, the Roborock needs to be more than a shiny toy that occasionally forgets where the dining room is.
The LG, the Roomba, and Where the Roborock Actually Wins
Before settling on the Roborock, I put it up against the $1,099 LG CordZero Robot and the $599 iRobot Roomba j7+. The Roomba is still the reigning champion of poop-avoidance, which matters more than it should when Beans is involved, and its actual pet-waste-avoidance track record deserves its own write-up someday. The LG's suction is genuinely strong, though how that suction trades off against battery life on a bigger floor plan is its own separate question. On our square footage it never ran out of charge mid-room, but its brushroll still gets strangled by hair after about ten runs.
The Roborock takes a different approach with dual rubber rollers instead of a bristle brush, which is supposed to dodge the 'hair rope' problem entirely. In practice, the rollers do hold up better over time, but the side-brush module still tangles with long husky undercoat faster than I'd like, and it's turned into the one part of the machine I have to check by hand. A friend nearby breeds Bernese mountain dogs, and when I described the side-brush problem to her, she just laughed and told me to try it with double the coat.
Four Weeks Into Daily Runs, Here's What the Tally Showed
Late August was peak shedding, and the Roborock ran daily without the main rollers ever clogging completely, though I was clearing the side brush by hand about twice a week. Before I trusted the machine, I'd been rolling a sticky lint roller over the couch cushions between every single vacuum cycle, on the theory that less loose fur on the furniture meant less migrating onto the floor. That didn't work. Murph sheds faster than any roller keeps up with, and I dropped the habit within a couple of weeks once the tally showed the bin numbers barely moved either way.
The first snowy week of December put the mop-lift feature through its actual paces. Sam watched the pad lift the instant it touched the bedroom rug and said, "Okay, that's actually smart," which is close to a five-star review coming from Sam. No soggy wool, no wet-mop smell tracked into the bedroom.
Six weeks of daily runs in, the self-cleaning dock had turned into a genuine convenience, though there's a faint warm-plastic smell from the base while it heat-dries the mop pad, not unpleasant, just the smell of the machine working. Every decibel number in my tally comes from the same method: iPhone NIOSH SLM app, phone held at standing ear height, same eight-foot stretch of hardwood in the main hallway, bot running its standard auto-clean mode, with runner-rug readings logged as a separate line, because a bot that's quiet on bare floor can turn into a different animal once the roller catches a woven edge. Around week four of daily runs, that's exactly what happened. I checked the meter out of habit more than anything, and it read sixty-eight decibels with the S8 Pro Ultra parked half onto the runner, loud enough that I said something to Sam from the next room instead of just typing it into the spreadsheet.
Does the Mapping and Mopping Justify the Price?
The Roborock's LiDAR-based mapping locked in our full floor plan by run two, while the Roomba j7+ took three runs just to figure out where the bathroom was. Whether that kind of mapping accuracy holds up a year in, past the honeymoon period, is a longer question I get into elsewhere, but the early setup was the fastest I've clocked on any bot. We usually have the PuroAir HEPA 14 Air Purifier running in the corner too — genuinely quiet at 28 dB in sleep mode by the same meter — and where you actually place that purifier in the room matters almost as much as which one you buy, which is a whole separate argument Sam and I still have.
Still, $1,399 is a hard number to justify on paper, and I've caught myself staring at Beans wondering what else that money could buy her instead. You're mainly paying for the Ultra dock — the part that washes the mop, empties the bin, and dries everything so it doesn't smell like a wet dog afterward. There's a moment mid-run where the mop's vibration seems to lift fine dander that the vacuum roller alone just rolls past, which is its own comparison I've made in more detail elsewhere. If mopping isn't something you'll use often, you're overpaying; if you've got hardwood floors and a double-coated dog, it's the difference between a clean house and a floor covered in tumbleweeds.
If you're still deciding which bot actually fits a multi-dog household, the deeper dive is in Six Robots Later: Why I Finally Stopped Swapping Vacuums in This Two-Dog Bungalow, where I show exactly how fast Murph's blow-coat season maxes out a dustbin and whether an auto-empty base changes that math. For the dander the vacuum never touches, I get into what Testing the PuroAir HEPA 14 Air Purifier for Persistent Dog Dander actually means for grades of HEPA filtration, so I won't repeat that whole breakdown here.
Living With the App (and Whether $1,399 Still Makes Sense)
One rainy afternoon in April, the Roborock got itself stuck on a stray dog toy, and the app notification landed on my phone almost instantly — that part works. The app itself, though, is dense to the point of being its own learning curve. Too many buttons. Too many "Pro" toggles nudging you toward accessories you didn't know existed. It's closer to checking out at Sephora than running a cleaning app — capable, but exhausting. Yusuf, my neighbor across the alley, had the spec sheet pulled up on his phone before I'd even broken down the box — he reads those PDFs closer than I ever do, which is useful when a company's suction or mapping claim doesn't quite match what's happening on my actual hallway floor.
The lesson four weeks of daily runs taught me: judge one of these by how it handles your actual dog's coat and your actual floor transitions, not by the spec sheet. On that measure, the Roborock S8 Pro Ultra earns its premium — it's the closest thing I've run that works for me instead of the other way around. Just plan on checking that side brush by hand every few days, and maybe set aside a little extra for dog treats to make up for the dent this one puts in the budget.