Some of the best robot vacuums we've tested are on sale for Prime Day, including savings of up to 50% on top-rated models from iRobot, Shark and Eufy.

Dyson, Shark and Bissell are all offering steep savings on robot and handheld vacuums, and even combination mop/vacuum devices. These deals end tonight, when Amazon Prime Day does, so don't linger too long. Bissell CleanView Swivel Full-Size Vacuum Cleaner $89.99 at Amazon

Amazon Prime Day includes tons of vacuum deals that go up to 80 percent off. Shoppers can score discounts on cordless vacuum cleaners, uprights, robot vacuums, and handhelds from top brands including Dyson,