Shark robot vacuums are on sale for Prime Day and there are some good deals to be had. For instance, the AI Ultra is on sale for just $280. This is 50 percent off, as the regular price is $550. This model topped our list of the best robot vacuums,

Prime Day is a great time to buy a Dyson — although the newest Gen5Detect is still expensive, older models like the V8 and V11 are just as reliable and often go on sale for 30 percent off or more. This cordless pet vacuum is one of our favorites overall, and it’s now on sale for a fraction of the price of a Dyson.

As of July 3, the iRobot Roomba Plus 405 is on sale for $399.99. This deal saves you $400 on list price, and is the lowest-ever price according to camelcamelcamel. Our robot vacuum expert has hand-picked this deal as one of the best ahead of Prime Day.