This Lefant M210 robotic vacuum cleaner is good for families with pets. Why the Lefant M210 can't connect to the APP: Please make sure you are using the new App-Lefant, waiting for you to unlock more features that were not available in the old App-Lefant Life. 【Small Body Design】: Are you still worried that the vacuum can't go under the furniture to clean? This Lefant M210 with an 11'' diameter and 2.99" Height works easily under or around beds, sofas and other furniture for a thorough cleaning and high coverage.