Roborock Poop Avoidance Isn't Magic: A 9-Point Pre-Run Checklist for Pet Owners (Plus the S5 Water Filter Fix)

Quick context: I handle Roborock orders and setup questions for a regional appliance dealer in Ohio. Four years, about 300 units a year, and I’ve personally made (and documented) 13 setup mistakes that added up to roughly $3,200 in replacement parts, carpet cleaning bills, and awkward apology calls. This checklist is the one I tape to the wall behind our workshop bench. It’s for new Roborock owners — especially pet owners — and for anyone using the mopping function for the first time. It won’t make your robot smarter. It’s meant to keep it out of trouble before it can find new ways to create it.

Who This Checklist Is For

Use this if:

• You have pets and are about to turn on obstacle avoidance and expect a miracle.
• You own a Xiaomi Roborock S5 (or S6) and want the mopping tank to stay functional longer.
• You’re setting up a Roborock for a rental property, an Airbnb, or a relative’s house and you won’t be around to troubleshoot.

The checklist takes about ten minutes the first time, and about ninety seconds on a regular day. Nine points.

The 9-Point Roborock Pre-Run Checklist

1. Supervise the first three runs

This is the boring one, and I’ve never had a customer come back and say they wasted their time. Run the first three cleanings on a weekend afternoon. Sit on the floor or follow it around. Watch how it handles door thresholds, rug edges, and furniture legs. The robot doesn’t know where your dog’s crate, your daughter’s shoepile, or the cable behind the TV stand is until it maps the room. If something goes wrong, you want to be there for round one, not round forty.

2. Do a “poop patrol” before every unsupervised run — even with obstacle avoidance

Here’s the myth, and the reality: “I bought an S7 MaxV Ultra / Q Revo / S8 Pro Ultra, it has AI obstacle avoidance, so I’m done.” Actually, obstacle avoidance is a vision system trained on photos of objects, and pet waste is unpredictable. Fresh piles reflect moisture and read clearly; dried, flattened patches blend into beige carpet the way camouflage blends into a bush. Low light and shadows under furniture make it worse. I’m not calling Roborock’s marketing deceptive — under FTC rules (ftc.gov), product claims have to be substantiated — but “can detect” and “will always detect” are different standards. In September 2023, a customer’s lab mix left a soft pile on beige carpet under a dining chair, and their older S5 Max (no AI avoidance) rolled right over it, then kept going — a four-foot smear across the living room. The cleaning bill was $600. Now I tell every pet owner the same thing: a 30-second walkaround costs less than any single thing it prevents. Set a habit: glance at the floors before you press Start. If you bought a Roborock robot vacuum specifically for poop avoidance, the phrase in our shop is “avoidance assist,” not “avoidance guarantee.” Your robot can’t smell what it can’t see.

3. Set no-go zones before the first mopping run

Open the app and block off the spots that regularly cause trouble: area rugs with dark fringe, pet food and water bowls, loose power strips, and thresholds the robot has to climb. Also block off any room with a pile of clothes on the floor — a sock can wrap around the side brush or main roller in about nine seconds. We replaced a roller assembly on a customer’s S5 because a single ankle sock got tangled and pulled the bearing out. That was a $50 part plus a week of waiting.

4. Clean the water filter on your S5 tank — before it clogs

The most overlooked part on the Xiaomi Roborock S5 isn’t the mop pad; it’s the small water filter on the tank cap. People think a water filter means the robot is “purifying” the water. It’s not. It’s a mesh screen that keeps sediment and mineral flakes from sliding into the drip valve and clogging it. If you’ve been refilling with tap water and the mopping flow starts slowing down after a few weeks, this is why. Pull the filter off the cap, rinse it under warm water — actually, cold-to-warm; hot water can warp the plastic mesh — and soak it in white vinegar for 30 minutes. Do it every 15-20 mopping cycles. We’ve caught 47 filter clogs in our shop using this schedule in the past 18 months, and it takes less effort than cleaning a coffee maker.

5. Use the right water

This sounds like common sense, but it’s a recurring failure. I said “use filtered or distilled water if your tap is hard” to a first-time owner once. They heard “use warm water to help it clean better.” Result: a swollen filter and a drip-valve block within three weeks. What I mean is: hard water leaves mineral scale inside the tank, which then lands on your floors as chalky residue and eventually clogs the filter. If your tap water leaves spots on your dishes, use distilled water in the tank. If your water is neutral, plain tap water is fine — just don’t leave it sitting in the tank for more than a week.

6. Set water flow by floor type, not by mood

High water flow on hardwood is how you get warped planks and streaks. Low water flow on a tile floor is how you get ten minutes of “mopping” that left everything dusty. On the S5, the app has three levels: Low, Medium, and High. I default to Low on hardwood, Medium on tile, and High only for short runs in a kitchen with greasy splatters. On newer models (Q Revo, S8 Pro Ultra), the mop-lifting and water volume adjust automatically — or rather, they adjust only if the app knows the floor type, so check the room settings before you start.

7. Verify the mop pad is aligned, and remove it after deep cleans

The S5’s pad attaches with a clamp and a strip of hook-and-loop. If the pad is slightly twisted during attachment, it folds over mid-run and turns into a wet streak roller. Check the two edges before you lock the clamp. And remove the pad after a deep clean — a wet pad left on the tank for 48 hours starts to smell like a gym bag. It takes longer to notice than you’d think (ugh, we’ve had three of those this year). Remove it, rinse it, let it dry.

8. Empty the dustbin before every mopping pass

Here’s a scenario I see far too often: a rental-property owner runs the vacuum cycle, then immediately switches to mopping without emptying the bin. The debris left in the roller area gets wet on the first mopping pass, turns to mud, and smears across the tile. I’ve seen drywall dust on a construction-site clean create permanent micro-scratches on luxury vinyl flooring. Thirty seconds of emptying and tapping the filter prevents a lot of regret.

9. Keep spare filters, pads, and a roller in the drawer

Roborock parts are light. A single S5 water filter can fit in a First-Class Mail large envelope — the rate is $1.50 at USPS as of January 2025 (usps.com). The problem isn’t the cost; it’s the time. I’ve watched customers pay $8-12 in expedited shipping because they didn’t want to wait the standard 5-7 days for a $2 filter. Buy the three-pack. Keep one spare water filter and one spare mop pad per robot in a zip-top bag with a label. Write the date you started using each spare on the bag (note to self: I once waited six days for a $2 part and lost a weekend of cleaning). It’s the cheapest insurance on this list.

Common Mistakes I Still See

This list wasn’t built in a day, and I’m still adding to it. Patterns that repeat:

• Running the robot overnight before testing it once during the afternoon. The robot uses the same map in the dark, but it can’t judge shadows the way it can in daylight. The expensive robot that circles a dog toy for 20 minutes isn’t a bug — it’s working as intended.
• Deleting the map instead of updating it after moving the dock. If the charging dock moves, the robot’s map anchors shift. Trigger a re-map instead of deleting, or you’ll lose your no-go zones and room dividers.
• Skipping firmware updates because they “take too long.” Roborock’s obstacle-avoidance improvements come through firmware, not just new hardware. If you never update, you’re running the same software that had a bad day in 2024.
• Adding cleaning solution to the tank. The S5’s drip system is not designed for soap or floor cleaner. Foam destroys the flow rate. Water only.
• Trusting a demo video over your own floor. Demo videos show a clear room with perfect lighting. Your house has a dog bed, a rug with a crinkle edge, and a power strip behind the couch. The robot hasn’t seen that before — until you let it.

One last note: I still catch myself skipping Step 2 on busy mornings. Then I remember the $600 carpet cleaning bill and I do the walkaround. Repetition saves money — that’s the whole checklist in one line.