Here are my picks for the best Prime Day deals on robot vacuums and mops
The excellent Roomba j7 is down to $400 this Prime Day. | Photo by Jennifer Pattison Tuohy / The Verge Robot vacuums are some of the most useful smart home gadgets you can buy. Small, circular home helpers that clean areas you can’t reach and work hard so you don’t have to, these little suckers…