5 Reasons D-Shaped Robot Vacuums Clean Corners Better Than Round Ones

Round vacuums leave gaps in corners A circle can’t physically reach into a 90-degree angle, so round robots always leave a small wedge of dirt behind.

Side brushes are a partial fix, not a solution Side brushes flick debris toward the main brush, but they often miss fine dust and can scatter dirt instead of collecting it.

D-shaped designs push the brush closer to edges The flat front of a D-shaped robot lets the main brush get within millimeters of walls and corners, picking up what round models miss.

Square-front vacuums clean along walls more thoroughly The straight edge runs flush against baseboards, so the brush can sweep the entire wall line without relying on a side brush alone.

The difference is noticeable in real-world use In homes with lots of corners or tight spaces, D-shaped robots leave visibly less debris along edges than round ones.