Don't you hate it when you have an itch you can't scratch? It moves, or gets to a spot where you just can't quite reach it, and the only thing on your mind is getting to that itch. While I'm not terribly fond of the werewolves around here, no creature should be subjected to such torture. Take these powder packets and find some of these poor, tortured animals. Hit them from a distance and you'll both do your good deed and get credit for the scavenger hunt.
Werewolves are creatures you don't want to pet
So seek them out where they will get wet
Baths do nothing to salve the itching
but delousing powder will solve their twitching.
Congratulations, you have completed a part of the Scavenger Hunt! Here is your reward.