mley1,
Hi! It's not a dumb question. I am still new to chicken raising so I only have a years worth of experience to share. The Wormguard Plus is in powder form that I add to their feed. It is used as a preventative but not good for using if you have an immediate problem / infestation. It wouldn't work quickly enough. There are other de-wormers to use that have been discussed in other posts here. I only used one of the other types of wormers when I first got my chickens. If you do a search on wormers here you'll turn up a lot of discussions and they'll give you more options. Good luck and have fun with your chickens!