I recently took in a Rat Terrier as a foster, and within 2 days discovered he was positive for whipworms. We've had him treated, but my question is how can I treat the soil in my yard to prevent reinfestation, or transmission to my own dogs? His diahreah was so severe that picking up the stool was not an option plus it was raining so hard the feces was immediately washed into the soil, so I will have to treat the whole yard to be sure. The vet suggested digging up every place he went...that won't work for the above reason. Has anyone had any luck using pulverized lime or diatomaceous earth? What about bleach? Triazicide? I need some suggestions!