The main differences between Bissell Natural Sweep 92N0A and Perfect Sweep Turbo 28806:

• The Natural Sweep does not require electricity to work, not corded nor battery powered, you move it back and forth to rotate the two brush rolls, one twisted and one tufted brush roll, at the bottom to pick up debris.
  The Perfect Sweep Turbo is powered by NiCd battery, it requires 12 hours to fully charged, and runs up to 60 minutes. This battery powered one does not generate suction, it is not a vacuum, the battery just powers the brush roll motor.
• The Natural Sweep has two rollers whereas the Perfect Sweep Turbo has only one brush roll. Thus it requires more time removing long hair, thread and other messes from the rollers when using the Natural Sweep.
• The Natural Sweep has 2 small Corner Edge Brushes whereas the Perfect Sweep Turbo has no edge brushes.
• The Natural Sweep has two built-in chambers to collect messes whereas the Perfect Sweep Turbo has one removable see-through bin to hold the messes. When emptying the Natural Sweep, you have to hold the whole unit over a
  waste container and then pull down on the tabs on the sides. As for the Perfect Sweep Turbo, you only lift the dust cup out to empty.

They both can sweeps debris on hard floors, area rugs, and carpets.
The Perfect Sweep Turbo cleans more efficiently because it has motorized brush roll. But it is about $14 more expensive than Natural Sweep.

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Other things you may want to know before buying:

• They do not swivel.
• The build quality of the handle on the Natural Sweep is not good, many users complained this issue.
• Just like other brush rolls on most cleaning machines, long hair wraps around the rollers on these two units.
• Don’t be fooled by the name of the Perfect Sweep Turbo, it does not vacuum, it has no suction power.
• These are sweepers, they cannot replace your vacuum. They does not clean corners and edges well.