In just 24 hours of Prime Day, Amazon has seen a whirlwind of deals especially for home tech. If you’re looking for a robot vacuum that also mops and doesn’t break the bank, the search can be tough as most models still hover around $500 or more.

As for its mopping function: You should swap out its dustbin tank for a water-filled one and it’ll gyrate its scrub pad against hard surfaces. There’s three options for mopping levels, and when you’re all done, you can toss the scrub pad into the washer to keep it clean.

The new iRobot Roomba Plus 405 is $400 off during Amazon Prime Day Save 50% on an all-in-one robot vacuum and mop with self-cleaning features.

We tested the most popular Roomba models to help you choose the best iRobot vacuum for your cleaning automation needs.