Deal pricing and availability subject to change after time of publication. Credit: AmazonIf you’ve been meaning to give robot vacuums a try, this deal on the iRobot Roomba Plus 405 Combo Robot Vacuum and Mop might be worth checking out. Right now, this deep-cleaning gadget is a whopping 50% off, bringing its $799.99 sticker price down to $399. After sucking up dust and debris, the device's mop pads take over to wash away anything leftover. The iRobot Roomba Plus 405 also includes LiDAR to map out each room in your home, so as to avoid any possible obstacles, like a sleeping pet or a staircase.