BISSELL SpinWave SmartSteam Mop 3712W vs Bissell SpinWave Pet Spin Mop 20399

The SpinWave SmartSteam 3712W is the stronger pick for most homes. It adds steam sanitizing, two steam levels, a no-steam mode and a 15-second heat-up on top of the same twin spinning-pad scrubbing action. The 20399 is the simpler corded spin mop: lighter, no heater, and aimed at pet owners with soft and scrubby pads. Owners rate the 20399 higher, but on far fewer ratings, so treat that gap as thin. Build on both is plastic and metal with swivel heads; the SmartSteam is the heavier, taller machine at 9 lb.

• Choose the BISSELL SpinWave SmartSteam 3712W if you want steam sanitizing plus scrubbing on sealed hard floors, with adjustable steam and a no-steam mode for everyday spills.
• Choose the BISSELL SpinWave PET 20399 if you want a lighter, simpler spin mop for pet messes on tile, vinyl, linoleum and sealed hardwood, and you don't need steam.