When you finally receive the keys to your new house at closing, the excitement of moving mounts to a feverish pitch and starts to feel real. Home sweet home becomes your mantra, and you eagerly await the time when you can arrange your possessions to create the serene feeling of turning a house into a home. But wait – how many other hands have touched your keys? Sure, the sellers used them, but who else handled them? The previous owners, their neighbors, friends, and relatives, not to mention the real…