Wet Dry Vacuum

Does it pick up large debris like cereals, dog food, etc?

The Floor One is designed to pick up debris like cereal and wash the floor simultaneously on hard floor surfaces.
Can I use the Floor One to clean carpet?

The Floor One is designed to be used with hard floor surfaces. The Floor One should not be used on carpets.
Does the brush scratch surfaces or dull floors?

No, it doesn't. The brush works great on hard floors causing any damage to it. It is also recommended to test an area of a sensitive surface before using any accessories on it.
How do I charge the battery pack?

Put the machine back to the tray and plug in the charger then it will start charging and stop automatically once finished.