Wherever it is, it can be killed instantly with the chlorine or bleach spray.
You just can't live there without taking action. Either move or spray the house until clean. This is a life or death situation. Can you call the board of health to ge the place condemned? You just can't accept this situation, my friend.
Don't underestimate the power of bleach. It kills on contact.
I would be packed up and moving out within a few days. You don't have to live like that.