Oh, right, this would be your first capture for this visit...

You should have a few spare pokeballs, either in your backpack or on your belt, and even a Munchlax shouldn't be able to eat those. If you toss one at that Pineco in its current state, you're almost guaranteed to catch it.

Assuming you want an exploding pinecone on your team, that is.

[She would very much understand if that's not the case.]