When Jake the Dobie use to live above my dad he had tape worms, & him & Max shared the same yard. The vet told Jake's owners to pick up the poop & then put boiling water with lots of bleach on top of the left poopy grass to help kill the worms. So we had to mark off an area where it was ok for them to kill my dads grass (it only took him 5 yrs to get grass to grow there), well Max never got the worms, & to be on the safe side we brought Max's stool to the vets after Jake was all better.