Second parvo-related question: What's my best option for disinfecting the small area of grass we were using to house train our puppy that died from parvo? It's been bleached the best we can in the middle of winter but is right outside our front door. Is there an age we can relax once our new puppy reaches it? We are waiting until the new pup reaches 11 weeks and has her third vaccination before bringing her home. Both are Shorkie mixes.

