Thank you for telling me. We got a terrible infestation of them years ago when they tore down an old abandoned meat plant. I was making my husband's lunch and left the room for just a few minutes and saw a rat climb out of his lunch box when I came back to the kitchen. We could hear them all night long running around in our ceiling and found at least two in the living area. It was terrible because we had heard stories of them biting people while they sleep and we had little children then. We all survived though, :).