![Amazon.com - iRobot® Roomba® j7+ (7550) Robot Vacuum Bundle with Automatic Dirt Disposal - Wi-Fi Connected, Smart Mapping, Ideal for Pet Hair (+2 AllergenLock Dirt Disposal Bags) Amazon.com - iRobot® Roomba® j7+ (7550) Robot Vacuum Bundle with Automatic Dirt Disposal - Wi-Fi Connected, Smart Mapping, Ideal for Pet Hair (+2 AllergenLock Dirt Disposal Bags)](https://m.media-amazon.com/images/I/61AB1guwUPL.jpg)
Amazon.com - iRobot® Roomba® j7+ (7550) Robot Vacuum Bundle with Automatic Dirt Disposal - Wi-Fi Connected, Smart Mapping, Ideal for Pet Hair (+2 AllergenLock Dirt Disposal Bags)
![Colin Angle, iRobot chief: 'The original Roomba algorithm is the same as the one our anti-landmine robots used' | Science | EL PAÍS English Colin Angle, iRobot chief: 'The original Roomba algorithm is the same as the one our anti-landmine robots used' | Science | EL PAÍS English](https://images.english.elpais.com/resizer/keAF4i-EaMqoDL5LQMpK_yaYiuY=/1960x1470/cloudfront-eu-central-1.images.arcpublishing.com/prisa/EEQQZV4XP5GEVHCPY4LLLUB27E.jpg)
Colin Angle, iRobot chief: 'The original Roomba algorithm is the same as the one our anti-landmine robots used' | Science | EL PAÍS English
![At this point of use, my old 675 had a over 1200 dirt events and i7 got only 23 and that's when I checked with rice. Sensor is clean : r/roomba At this point of use, my old 675 had a over 1200 dirt events and i7 got only 23 and that's when I checked with rice. Sensor is clean : r/roomba](https://i.redd.it/s5iiv8nfyv291.jpg)
At this point of use, my old 675 had a over 1200 dirt events and i7 got only 23 and that's when I checked with rice. Sensor is clean : r/roomba
![My robot has not registered any “dirt events” in over 40 hours of cleaning. Is this normal? My home isn't THAT clean. Especially when I first got the robot. : r/roomba My robot has not registered any “dirt events” in over 40 hours of cleaning. Is this normal? My home isn't THAT clean. Especially when I first got the robot. : r/roomba](https://i.redd.it/rmrcd4vjkei81.jpg)
My robot has not registered any “dirt events” in over 40 hours of cleaning. Is this normal? My home isn't THAT clean. Especially when I first got the robot. : r/roomba
![iRobot® Roomba® i1+ (1552) Wi-Fi Connected Self-Emptying Robot Vacuum, Ideal for Pet Hair, Carpets - Walmart.com iRobot® Roomba® i1+ (1552) Wi-Fi Connected Self-Emptying Robot Vacuum, Ideal for Pet Hair, Carpets - Walmart.com](https://i5.walmartimages.com/seo/iRobot-Roomba-i1-1552-Wi-Fi-Connected-Self-Emptying-Robot-Vacuum-Ideal-for-Pet-Hair-Carpets_92cb2b00-f2c9-4f7c-abe8-abbbb9d4d2e6.36c7dc1a28e507126eee2d4a557c95ff.jpeg)