If you like the idea of spring cleaning but not the part where you actually have to clean, both the Ecovacs Deebot X8 Pro Omni and newer X9 Pro Omni have dropped to their lowest prices to date ahead of Amazon’s Big Spring Sale, which officially kicks off on March 25th. The X8 Pro Omni is available for $599 ($501 off) from Amazon, Best Buy, and Ecovacs, while the X9 Pro Omni is on sale for $679 ($621 off) at the same retailers (Amazon, Best Buy, Ecovacs).

Both robot vacuums are packed with smart features designed to reduce the time you spend cleaning. Using lidar and a 3D camera for mapping, they can deftly navigate around furniture and baseboards, and even identify and avoid potential obstacles. The roller mop on both models also cleans itself while it works, and each robovac comes with a multifunction dock with a built-in water tank, allowing them to refill themselves and move dirty water into a separate waste tank. You can also use either the companion app or voice commands to control them thanks to their support for Matter, which lets you connect them to platforms like Alexa and Google Home.

Both models are excellent cleaning devices, too, and each uses an extendable roller mop that can apply up to 4,000Pa of pressure and reach hard-to-clean areas (including corners). The biggest differences between the two models come down to how they handle suction and airflow while vacuuming. For instance, the last-gen X8 Pro Omni offers slightly more powerful suction at 18,000Pa, compared to 16,600Pa on the X9. The X9 Pro Omni, meanwhile, leverages Ecovacs’ Boosted Large-Airflow Suction Technology, which moves more air through the vacuum, allowing dust and debris to be pulled in more easily for a deeper clean.

It’s worth noting that Ecovacs now sells a newer flagship, the Ecovacs Deepbot X11 OmniCyclone, which is also currently on sale at Amazon for $899 ($600 off). The high-end model adds even more suction (19,500Pa), an improved roller mop system, and a bagless auto-emptying dock that eliminates the need for disposable dust bags. That said, the X8 Pro Omni and X9 Pro Omni still offer many of the same core cleaning features for hundreds less.