What can I do about small pools of water on my garage floor?
Your options are:


Do nothing.  A little bit of standing water on an unsealed concrete floor will seep away and vanish in a few hours to days.
Use a broom or squeegee and move the water outside or to a drain.
Place catch basins (if it comes from a drip above) or barriers (if it comes from the side over the floor) to prevent the water from standing on the floor.
Identify the source of the water and remedy it.