The intelligent, straightforward navigation system uses floor sensors to clean efficiently and logically in straight lines. When the i3/i3+ needs to be recharged, it resumes cleaning right where it left off, ensuring everything is thoroughly clean. It takes care of dirt by emptying its dustbin into an anti-allergen bag that can hold dirt for up to 60 days. For you, this means two months without a thought about vacuuming. Fine dust or coarse dirt? No problem. Two rubber brushes for all floor types, along with an extra-strong suction power that is ten times more powerful, ensure a deep clean. Embedded dirt, dust, and pet hair are picked up from everywhere, and with the help of a corner and edge cleaning brush, even the last crumb can be removed. The Roomba i3+ learns your cleaning habits and can suggest personalized schedules. Thanks to compatibility with Google Assistant and Alexa, cleaning tasks can be easily initiated with voice commands. Additionally, Roomba even suggests extra cleanings during high pollen counts in your area or during your pets' shedding season.