How do you know if there's a skunk under your deck?

Faint Bad Odors, the most obvious sign.
Holes and Shallow Burrows in the Yard Unlike other animals such as canines, skunks are understood to dig completely circular and shallow holes in the ground. 

Can a skunk climb?

Skunks have sharp teeth and long claws for digging. They are nearsighted, but have an eager sense of smell and hearing. The striped skunk is not a great climber. It can climb up wire mesh, fences, and boards, it rarely climbs up trees– the long nails are a guaranteed handicap in climbing.

What damage do skunks cause?

Skunks are notorious for the foul odor of their spray and their digging routines. Skunks will leave holes in your lawn when digging for bugs, and they can damage your foundation if one chooses to construct a burrow underneath your home.