I have rescued a 3 month old lab husky mix about three month ago. He just tested positive for giardia. I have taken all of the steps to sanitize the house, including his crate and all bedding. We have a pretty big back yard and haven't really limited him to a specific space to eliminate. I do pick up the waste right away and spray it with a 1:10 bleach water solution. My biggest concern is we don't know how long he's had and I am curious as to how long the giardia will live in the other areas he's eliminated previously. Does anyone have any idea or any other suggestions? Oh and our yard stays pretty moist and gets swampy whenever there is any type of precipitation.