A robot vacuum looks self-sufficient: it drives itself, docks itself, and charges itself. What it does not do is clean itself. Hair wraps around the brush roll, dust coats the sensors, the filter clogs, and the dustbin packs full — and each one quietly makes the next run worse. The whole maintenance routine takes ten minutes a week, and it is the difference between a robot that works for years and one that bumps around the house doing nothing.
After every run, empty the dustbin and check the brush roll. A full dustbin cuts suction in half, and hair on the brush roll wraps tighter with every run until it stops spinning. Two minutes after each run prevents most of the problems below — the same habit that keeps a regular vacuum working keeps a robot working, as the vacuum cleaning guide shows for its bigger cousin.
Empty the dustbin. Take the dustbin out and empty it into the trash after every run. Tap it out over the bin — do not let dust pack into the corners. If the dustbin is washable, rinse it with water once a month and let it dry completely before you put it back.
Clean the brush roll. Flip the robot over, take the brush roll out, and cut the wrapped hair and string off with scissors. Pull the hair off the roller instead of yanking the roller — a bent roller wobbles and wears out the bearings.
Clean the side brush and the wheels. Pull hair off the side brush and check that it spins freely. Spin each wheel by hand and pull out any hair wrapped around the axles — hair on a wheel axle is why a robot starts driving in circles.
Wipe the sensors and the camera. Wipe the cliff sensors, the wall sensor, and the camera lens with a dry microfiber cloth. Dirty sensors are why a robot falls down stairs, bumps into furniture, or cleans the same room twice. Never use water or cleaner on the sensors — a dry cloth is enough.
Clean or replace the filter. Tap the filter against the side of the trash can to knock the dust out. Wash it only if the manual says it is washable — a washed non-washable filter clogs permanently. Replace the filter every two to three months, or sooner if suction stays weak after cleaning.
Wipe the charging contacts. Wipe the metal contacts on the robot and on the dock with a dry cloth. Dirty contacts are the most common reason a robot stops charging: the dock has power, the robot is parked on it, and nothing happens.
Check the wheels and the bumper. Press each wheel and the bumper and make sure they move freely and spring back. A wheel that sticks or a bumper that stays pressed tells the robot the wrong thing about where it is, and it cleans in circles or gives up.
A robot vacuum that smells has a dirty dustbin or a dirty filter — wash the dustbin with soapy water, dry it fully, and replace the filter. A robot that has lost suction has a full dustbin, a clogged filter, or a blocked intake: empty the bin, tap out the filter, and check the intake for a sock or a chunk of debris. If suction is still weak after all three, the filter is done. A robot vacuum and a steam mop do different jobs on the same floor — the steam mop comparison covers the wet side of floor cleaning.
Never wash a filter the manual says is not washable. Never use water or spray cleaner on the sensors or the camera. Never pick the robot up by the brush roll. Never let it vacuum a wet mess unless it is a model built for mopping — water in a vacuum motor kills it. And keep cords, socks, and small toys off the floor: a robot vacuum eats them, and the repair costs more than the cleaning it was doing.
Empty the dustbin after every run, clean the brush and the sensors weekly, and wash or replace the filter monthly. A house with pets needs the brush cleaned twice as often.
Only if the manual says it is washable. Most robot vacuum filters are not — washing one clogs it permanently. Tap the dust out instead, and replace the filter every two to three months.
Usually hair on the wheels or the brush, or dirty sensors telling it the wrong thing about the room. Clean the brush, the wheels, and the sensors, and pick up cords and small items before a run.
The dustbin or the filter is dirty. Wash the dustbin with soapy water, dry it fully, and replace the filter. A smell that survives both means the brush roll needs cleaning too.