Parvo in yard

Had a litter last yr come down with parvo, lost a fm, n saved a fm n male. I shot 50cc of saline under the skin every couple hrs, shot a blended mixture of eggs for protien n sardines for iron replacement from loss of blood just plain yogart when i would shoot the saline. It took bout 5 days to get them to come around n back to eatn n drinkn on their own. I used a pto tiller, tiller the entire yard and used 5 bottles of bleach for a 55gal drum of water n let it drain out as i tilled the ground n didnt hav any more issues. Mite hav went a lil overboard tilling it but i didnt want the stuff around. Lots of re-hydration n replinishment of protien n iron n electrolytes for a wk or so is the cheapest but wears on the sleep time, but it beats a $600+ vet bill