Shark floor-cleaning devices, owned by Euro-Pro Operating LLC, overhauled the design of its electronic Sonic Duo floor cleaner, set to launch in April, after tests revealed how strenuously some people used it.

WSJ: Cleaning Products Get Stronger Even Though Scrubbers Insist On Using Elbow Grease

With both players largely operating from the same places on the floor, the team's spacing was insufficient, and either one scorer or the other was often obsolete based on where he was standing.

WSJ: Missing Stoudemire (Again)