Some useful links i forgot to include. (I had put them in with the rest of the conversation on another message board.)

http://www.marvistavet.com/html/body_ivermectin.html (I had been talking about how i had heard of the dangers of these others and why we had kept King on Heartgard. After reading this link i can understand why people had bad experiences. The chemical reactions. People need to be armed with information on how to safely uses these medications.)

http://www.veterinarypartner.com/Con...8&S=1&EVetID=0 (just general all around useful information)

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Thank you for the kind words.

Yes, whipworm eggs can last in the soil for years. I think i read generally from two to seven years on average.

Yes, we're picking up Interceptor on Monday. (And giving the rest of the Heartgard to a rescue :-D They said they use Interceptor on their dogs, but can always use donations.)