The standout feature on the J20 is an innovative mop pad, set on a roller like the wheels of a tank, which works extremely well. It's very much a premium option, but the performance is excellent.

For $100 more, you can dispense with dealing with the water tanks entirely and buy the Refill & Drainage System model. This lets you plumb the charging base directly into your home’s water supply.

Its sonic mopping system — which vibrates its mop pad 4,000 times a minute — ably simulated scrubbing and wiped out my OJ and ketchup tests, though I did have to set it to deep scrub.

This pint-sized but powerful robovac is perfect for small homes – and it just dropped to less than half price

The Dreame X40 is the best robot vacuum / mop hybrid because it can drop its mop pads automatically, extend them, and swing them to get under your cabinets and consoles.

Right now, the best robot vacuum on the market is the Eufy X10 Pro Omni. On test, this combination robot vacuum and mop was almost perfect, acing our cleaning tests and delivering accurate navigation too.

In fact, the Freo X Ultra is one of the quietest bots I’ve tested. Even at full power, it was so quiet that I had to check that it was working. Its anti-tangle brush and oito,200Pa suction did a good job on most carpet, but its 12mm mop lifting isn’t good for plush carpets.

Robot vacuums are impressive devices that will clean your floors well and — thanks to bigger batteries and better robot brains — rarely get tired of doing their job.

Overall value: We assess based on how well the product performs in all of the tests, comparing its performance with the price tag and promised features.

The specs stood up on testing too; this robovac's vacuuming powers are some of Top 3 Automatic Vacuum Cleaners the very best we've come across. Our tester also found it could tackle the edges of rooms remarkably well, and its mopping is excellent too.

Plus, the addition of a side mop and flexi-arm brush that extends from the bot helped with cleaning edges and corners.

While its vacuuming is good, particularly on carpet and tile surfaces, the single rubber / bristle roller brush lets it down and is a good illustration of my point that it’s not all about suction power; it’s also about the brushes and how you use them.

If non-e of the robot vacuums above take your fancy, here are some other models worth considering. These robovacs all scored highly on test, but just didn't quite make our main guide.

Narwal’s obstacle detection is also only okay; there’s no camera, and it routinely eats cables. Its three lasers can identify objects as small as a sock and move around them, and it did pass my fake pet poop test.