Updated July 2026

Robot Mower FAQ: The Stuff People Actually Want to Know

Do robot mowers work in the rain?

Most 2026 machines are weatherproof and can physically mow in rain, and many have rain sensors that send them home to the dock. You should schedule around rain anyway: wet grass cuts poorly, clumps under the deck, and soft ground ruts under heavier machines. The good news is that a robot mowing daily has plenty of dry windows to keep up.

Are they safe around kids and dogs?

Far safer than any mower you push. Lift and tilt sensors kill the blades instantly if the machine is picked up or flipped, pivoting razor blades retract on impact, and camera or LiDAR machines actively steer around people and animals. That said, a spinning blade is a spinning blade: supervise small children, keep hands out from under a running mower, and consider night mowing schedules if your yard doubles as a playground. Small pets that hold still (and hedgehogs, famously, in Europe) are the hardest case for any sensor, which is another argument for not mowing in the dark hours when they're active if wildlife visits your lawn.

How long does one last?

Five to ten years for a quality machine with basic care. Budget one battery replacement ($100-300) around years four to six, and blades as a running consumable. The maintenance guide covers the schedule that gets you to the long end of that range.

Do they get stolen?

Rarely enough that it shouldn't drive your decision. Modern machines have PIN locks, alarms that scream when carried, and GPS tracking, which makes a stolen robot mower a loud, traceable brick. Check whether your homeowner's or renter's insurance covers yard equipment anyway; it usually does.

What happens to the clippings?

Nothing, and that's the feature. Robot mowers mulch: they cut a few millimeters frequently and drop fine clippings that decompose into the turf as fertilizer. No bagging, no piles. This frequent-light-cut pattern is also why robot-mowed lawns tend to look denser than weekly-cut lawns.

Can it handle my slope?

Measure before you buy. Standard rear-drive machines are rated for roughly 30 to 45 percent grades (a 45% grade rises 45 feet over 100 feet of run). AWD machines like the LUBA 3 AWD are rated to 80 percent. Discount every rating some for wet grass, and note that ratings apply to the middle of the lawn; most machines want gentler grades near boundaries.

How loud are they?

Quiet enough to run at night: most sit between 55 and 65 dB, conversation volume, versus 85 to 95 dB for gas mowers. The Navimow i-series publishes 58 dB. Your neighbors will not know it's running.

Do I still have to trim edges?

Almost always yes, and it's the category's most under-disclosed limitation. Expect a narrow uncut strip along fences, walls, and beds that needs string trimming every week or two. The one machine attacking this head-on is the ECOVACS Goat A3000 with its built-in TruEdge trimmer.

Do wire-free mowers need Wi-Fi?

They need connectivity, but not necessarily yours. RTK machines like the Navimow line use built-in cellular connections (often with free included data) for positioning corrections. App control generally works over Bluetooth up close and cellular or Wi-Fi remotely. Check the specific model's requirements if your property has weak cell coverage, and read the navigation explainer for how each system fails.

What size mower do I need?

Bigger than the box suggests. Manufacturer acre ratings assume near-daily mowing in good conditions, so buy at least 30 percent more rated capacity than your actual grass area. Sizing guidance by yard type lives in the small yards and large yards guides.

Still deciding? Start with the honest payback math, then the 2026 roundup.