Robot vacuums have steadily improved their cleaning performance and object avoidance over the years, but during our testing at CNET Labs, we discovered an odd trade-off.

Watch how a US robotics firm trains a dual-arm robot to fold a towel autonomously using vision and human demonstrations.

CNET has been testing robot vacuums for years, but we're always refining our testing procedures. Here's the process we use to evaluate robot vacuums for cleaning, navigation performance, obstacle ...