Our pup is 12 weeks old and eats nasty stuff just about every day. We gave her the worm meds that we got from the vet at her first check-up last week. (Yes, we took care of her puppy shots ourselves but had to take her in for rabies vac.) We live on a farm so she is allowed to roam outdoors at will --- she stays close by.

She is always finding half dead voles, mice, baby rabbits etc. that the cats aren't hungry enough to finish off and I know she probably will always have worms. We give her garlic and Diatomaceous Earth daily but if I have to use the chemical stuff, how often is too much?