According to an old saying, your home is your castle, your television is your court jester, and your dog is your moat. Repel invading dust-bunny hordes with this Groupon: for $129, you get a Navigator robot vacuum from Paranello (a $365 value). Shipping is not included with this deal.

Paranello’s team of inventors research and develop upscale appliances for daily use, steering society into the future with forward-thinking products such as the Navigator robot vacuum. Ultrathin and easy to operate, the Navigator barely emits any noise as it sucks dust and debris from tile, linoleum, hardwood, and low- or medium-pile carpet. Soft rubber wheels whisk the device under and around furniture and snatching tiger's claws, and a handy side brush tends to hard-to-reach sides and corners. Unlike subjects in an M.C. Escher painting, the Navigator won't fall down stairs or bump into obstacles thanks to a built-in detector, which can also erect invisible barriers to keep the disk limited to certain areas.