Last year I had two dogs with Giardia and I had to be so careful. Always wore shoes myself inside and of course outside, cleaned paws after each dog went outside, bleached water on potty areas, limited dog’s access to wet damp areas of lawn and dirt. It just about wore me out, but I learned a valuable lesson about cleaning up the poop, which I do now twice a day. I think we got infected from a new puppy of mine that had lived on a ranch and the owners let the little young litter mates go out into the fields to play where they were exposed to farm yard pooh and the Giardia - just a guess. Of course it was winter and that just made the transfer likelihood worse. I did get my situation under control though and this year hope the problem is permanently solved. My vets keeps reminding me on what I need to do to keep such things under control cleaning up pooh and keeping the dogs paw pads clean is just the beginning. I’m interested in what Dr. Becker has to say on the subject.