?? Battery life and dust cup: Let the size of your home guide you. If you live in a small apartment, you can consider a corded vacuum or one that doesn’t need as much battery life; if you have multiple floors, you'll want a longer run time and a bigger dust cup. If you have stairs, you’ll need a vacuum that can easily go up and down each step a

The cheapest robovacs will only have a dock for charging. Pricier models incorporate self-emptying of the onboard dustbin, and draining/refilling of the onboard water tanks. The very fanciest models offer automatic mop pad cleaning, and detergent dispensing for the mopping fluid.Many of today's best robot vacuums are also able to mop floors. This c