Hi, hope this clarifies things a bit. 
It seems that something or someone has disturbed your sense of safety and security lately?
You are trying to claim it back and you are having difficulty doing so.  Could you tell someone about it?
It could also mean that you feel that part of you has died and you are feeling less than whole.  To see dead people in your dream, forewarns that you are being influenced by negative people and are hanging around the wrong crowd.
The salt is a strong symbol of casting out evil influences in your life and cleansing yourself of them.  The rats eating at the body signifies that you feel like you are failing to keep these negative people at bay.  Keep trying you will win in the end.  Hope that made sense.