Chris I used Nemex 2 that you get at TSC! I think its about 16 bucks and should do the whole litter at least 3 times. I started the pups and mom at 3 weeks then give them all another dose at 4, 5, 6, 7 and 8 weeks. Its easy and works well! All you need is a small syringe!
X2 This is the way to go.