A dog doc friend of mine from florida says all the dogs have it where he lives
cause of the puddles of water everywhere, they keep reinfecting each other.
On the other hand there have been a couple of studies showings Sierra Nevada
mountain water to be better than tap water.
http://www.yosemite.org/naturenotes/Giardia.htmThe best way to avoid Giardia is to make sure your buddies wash there hands
after they poop and before they dip into the gorp bag.