James Braithwaite, Euro-Pro vice president of research and development, says Shark had to "over-engineer" the device's head, which holds the floor cleaning pads, so it would stand up to consumer pressure.

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

Pre-programmed cleaning cycles allow consumers to choose between floor-only cleaning or floor, wall and waterline cleaning, a necessary chore that many pool owners just don't want to do manually.

ENGADGET: Polaris' pool-cleaning robots get updated with added intelligence, four-wheel drive

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

It has a 2-hour cleaning cycle, is lighter weight, and is especially good at cleaning the pool floor and cove.

ENGADGET: Polaris' pool-cleaning robots get updated with added intelligence, four-wheel drive

The court heard he could not smell it due to his poor sense of smell and his English was not good enough to understand the writing on the bottle, which he thought was cleaning soap for the floor.

BBC: Danilo Restivo

Diversey, No. 121 on the 2010 list of largest U.S. companies, makes commercial cleaning compounds and equipment and its offerings include commercial floor wax, sanitizers for restaurants and food-processing companies, cleansers and deodorizers for restrooms, and industrial degreasers.

FORBES: Diversey To Be Acquired by Sealed Air