iRobot's Roomba i4+ EVO robot vacuum has a 60-day auto-empty base at $399 (39% off), more
Amazon.com - iRobot Roomba j6+ (6550) Self-Emptying Robot Vacuum – Identifies and avoids pet Waste & Cords, Empties Itself for 60 Days, Smart Mapping, Compatible with Alexa, Ideal for Pet Hair, Graphite -
Amazon.com - iRobot Roomba i6+ (6550) Robot Vacuum with Automatic Dirt Disposal-Empties Itself for up to 60 Days, Wi-Fi Connected, Works with Alexa, Carpets, Smart Mapping Upgrade - Clean & Schedule by