Mothballs in Small Space

So I think I fucked up. My barn was having a skunk issue and I was advised to get mothballs. The skunks were going under the tackroom (so essentially a crawl space that's big enough for said skunk) and it has no access for a person to go under.

I proceeded to toss mothballs under the room via the small entrance the skunks were using. Once the smell began, I realized I fucked up and starting doing research. I had NO idea how dangerous these things were!

What the hell do I do? 😭

This is a room inside a barn with one wall exposed to the outside. It is not climate controlled.