Not to scare the bejesus out of you but you might want to be cautious if you find rodent droppings around your place. Hantavirus is not something to take lightly. I've done a few clean ups of this type and while it's not rocket science you do need to be careful. We've just had two deaths in our state from the virus. The virus spread by deer mice is more common in the southwest especially when the winters have been warm. The article below mentions spraying a solution of 1 1/2 cups of bleach to one gallon of water. I would add using a disposable paper suit and good 1/2 face respirator. And don't forget to spray your shoes with the solution.