bugs bugs bugs

In this episode there was a wife who was found wrapped up in a blanket and found dead on the scene with bugs all over the place. Well, they took samples of the the bugs and couldn't quite tell correctly how long she had been dead. So then they decided to use a pig and wrap it up in a blanket and study the bugs. We were wondering if that is actually accurate. Are they really that related to humans that you can do that?Also when you clean blood off like that is the stain thay apparent when you put the chemical on it? Blog out.