Spook them out? A good squirrel hunter never lets the squirrel know he's in the woods. We hunt strictly with a rifle and a moving squirrel is not a high percentage target.
Season of the yr and weather have a lot to do with timing. Really cold snow covered woods with a breeze on a sunny day? Hunt a sheltered south slope early in the afternoon under oaks and walnuts.
August through October and into November, early morning's and late evenings are best. Though as it gets later in the year, they'll be active a large chunk of the day storing nuts. Always hunt the food source that's ripe. They love beech nuts over
about anything early in our season but mast crops on beech can be spotty, year to year. Wild cherry and a producing muscadine or foxgrape vine can be very good early also. Hickory nuts are next in line of favorites, then oaks and walnuts. They'll be ripe at different times according to species and varieties within those species.
A Shagbark or Shellbark hickory in early September can mean an easy limit if a feller can sit still and wait to pick up the ones he has killed.

In a lean mast year Tulip poplar and maple seeds are often a target. I hate those
yrs. Beech can be tough to hunt 'cause the squirrel seldom stop. But the maples and tulip trees offer so much cover that it's nearly impossible to find a squacker if he knows you're there.

If you hunt with a scattergun it's less of a challenge. You'll usually kill more squirrels. But I've never lost a tooth nor bit down on a wad of hair on a squirrel
that was head shot with my rifle.