[matese]

Can you block off the skunks entrance. Also can you enclose the underside of your deck with chicken wire, this will prevent them from getting under your deck. I was told putting moth balls where skunks live will keep them out of that area.
I had the same issue, skunks found a way into my yard. I found where they were entering. I waited until dusk when I was sure they would be out from under the deck, I blocked their entrance with a cinder block, then I enclosed the bottom part of my deck with chicken wire, my deck is 3 feet off the ground,NO MORE SKUNKS.
When I had my summer home I had a deck that was a few inches off the ground, I had a family living under it, they would send off little warning puffs of phew you's when the dogs would track them, again I waited until dusk, threw a hand full of moth balls under the deck at their point of entrance, then blocked the entrance with a couple of bricks, it worked for me. Some years back while walking 2 of my babies off leash at a camp ground my older pup took off, I though it was a cat that she saw lol, when I caught her OMG, not a cat, skunk, she got sprayed in her face, the smell can take your breath away, I soaked her in tomato juice, the next day I took her to a groomer who used a special shampoo for skunk odor, the smell was 100% better, but, she had a slight smell around her eyes for months until that hair was long enough to be cut off. Do be careful, you never want one of your babies to get sprayed the smell is unbearable. Good luck.