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Yarbo's robot takes in snow up to 12 inches high, throws it 6 to 40 feet and clears up to 7,000 square feet per charge in light snow. Here is how depth and wetness change those numbers.

The most useful gift for someone who owns a home is one chore they never have to do again. Here are ideas by chore, from windows and floors to pools, leaves and snow, and how to choose one that fits.

A vacuum mop robot picks up dust and then wipes the floor in the same pass. Here is how the combination works, what to look for, and how the HOBOT LEGEE-688 approaches it.

Both hold to the glass, mist it with ultrasonic spray and wipe automatically. The HOBOT-2S adds a second nozzle, sensors that find the edge of frameless glass, better corner coverage and an app.

Yes. A window cleaning robot holds to the glass by suction, wipes in a planned pattern and saves the ladder work. Here is what it does well, where it leaves a little for you, and how the safety systems work.

Most robot mowers survive rain, and some detect it. Cutting soaked grass is a different question: it clumps, tears and ruts soft ground. Here is what the makers list and how to handle wet weeks.

Mower slope ratings come in percent and in degrees, and the two are not the same. Here is how to measure your slope in ten minutes, convert between the scales and read a rating correctly.

A remote control mower is worth it when the ground is too steep, rough or overgrown to mow safely any other way. On a flat, easy lawn it is not. Here is how to tell which yard you have.

The 2WD handles gentle slopes up to 45%. The 4WD climbs 75% and more with the right tires, cuts taller grass, clears bigger obstacles and takes the snow plow. Here is how to choose.