This fits your home

• Does not matter4, 4 models
• Mostly hard floors (laminate, tile, wood, vinyl)4, 4 models
• A mix, with rugs or some carpet2, 2 models
• Mostly carpet2, 2 models

With carpet and rugs the robot must lift or drop its mop, or the rug gets wet.

• Does not matter4, 4 models
• Yes, pets3, 3 models
• Yes, long hair (no pets)3, 3 models
• No4, 4 models

Hair wraps around the brush. An anti-tangle brush prevents that; a camera that recognizes droppings prevents the other well-known accident.

• Does not matter4, 4 models
• Up to 0.8 in (2 cm), or none4, 4 models
• Higher than 0.8 in (2 cm), up to 1.6 in (4 cm)0, 0 models
• Higher than 1.6 in (4 cm)0, 0 models

Most robots cross 0.8 in (2 cm). Higher thresholds need a climbing system. Measure under your couch too: a low robot fits underneath.

• Does not matter4, 4 models
• Rarely4, 4 models
• Sometimes2, 2 models
• Often0, 0 models

A robot with a camera recognizes small items and drives around them. Without one it drives over them or gets stuck.

• Does not matter4, 4 models
• Only robots that fit under low furniture2, 2 models

It must also fit under low furniture (less than 3.5 in, or 9 cm, of room)