Parvo in yard

When I was younger we had a few dogs die from it even older dogs its bad stuff. Best solution we found was to bleach the heck out of it or use pine on pine not sure if it actually worked but we have never had a parvo problem there since. Also had a dumb guy bring a bunch of puppies to our old apartment complex that had parvo and it got to quite a few ppls dogs they used the pine o pine and lime treatment and no problems since. Other that that people have always said it takes 7 to 8 years to get out of the ground. I wish you the best of luck lots of raw meat and pedialite or gatorade to ones who get it I know first hand how hard it is to watch a dog suffer from this.