Are robot lawn mowers safe for children, pets and hedgehogs?

How robot mowers are made safe

Robot mowers sold in the UK must meet safety standards for household robotic mowers. In practice, most share a set of features designed to stop the blades quickly when something goes wrong.

• Lift sensors stop the blades if the robot is picked up
• Tilt sensors stop the blades if it tips past a set angle
• Bump or obstacle sensors make it stop and turn when it touches something
• Small blades sit well inside the body, away from the edge
• A stop button on top halts the robot immediately
• PIN codes or app locks stop anyone else using it

Blades: smaller but still sharp

Most robots use small pivoting blades on a disc, a bit like razor blades. They have little mass, so they swing back if they hit something hard, and they cut by spinning fast rather than with the heavy force of a petrol mower. That makes serious injury less likely, but the blades are sharp and can still cut fingers or toes. Always switch the robot off and wear gloves before touching the underside.

Note:Never lift or tip a robot mower while it is running, and never let children play with or ride on it.

Children

The main rule is simple: keep young children off the lawn while the robot is working. Schedule mowing for times when the garden is not in use, such as school hours, and teach older children that the robot is not a toy. Use the PIN or child lock so it cannot be started by accident. Most robots stop if lifted, but small hands and feet near the body are the risk to avoid.

Pets

Most dogs and cats learn to ignore a robot mower quickly, though some dogs chase or bark at it at first. Supervise early runs. Pick up dog mess before the robot mows, as robots spread it. Robots also cannot tell a sleeping pet from a cushion unless they have good obstacle detection, so check the lawn before a scheduled run. Wire-free models with cameras or lidar, such as those in our wire-free robot guide, tend to spot obstacles better.

How robot mower sensors work →

Hedgehogs and wildlife

Hedgehogs are a real concern. They are mostly active at night and curl up rather than run when threatened, and wildlife charities have reported injuries linked to robot mowers. The single most effective step is to run the robot only in daylight and never overnight. Leave a wild corner or a strip of longer grass where possible, and check under hedges and in long grass before the first cut of the season.

Frogs, toads and slow worms can also be in long grass. Cutting little and often in daylight keeps the grass short, which gives wildlife fewer reasons to shelter in the mowing area.

Note:Set your schedule to daytime hours only. Many makers now recommend this, and some apps include a night mowing lock.

Theft and tampering

PIN codes and alarms also stop strangers from picking up a robot and using it. Many models add GPS tracking. Our explainer on whether robot mowers get stolen covers the anti-theft features in detail.

Simple garden rules

A few habits make robot mowing safe for everyone. The list below sets them out.

1. 1

   Schedule mowing in daylight, when the lawn is not in use

2. 2

   Use the PIN or child lock

3. 3

   Pick up toys, dog mess and fallen fruit before a run

4. 4

   Keep children off the lawn while it mows

5. 5

   Switch it off before touching it

6. 6

   Check long grass and hedges for wildlife in spring

Compare robot lawn mowers →

Frequently asked questions

Can a robot mower cut your feet? The blades are sharp, so it is possible if you put a foot under a running robot. Lift and bump sensors reduce the risk; keep feet and hands away.

Are robot mowers safe for dogs? Generally, yes, with supervision at first. Pick up dog mess before the robot runs.

Do robot mowers kill hedgehogs? They can injure them, mainly at night. Run your robot in daylight only to protect hedgehogs.

Is it safe to leave a robot mower running when I'm out? Yes, if the garden is closed to children and pets and you use a daytime schedule and a PIN lock.