I have replaced the light bulbs in the bathroom lights and hallway alot lately but just 2 weeks ago i put all new bulbs in the three light fixtures in the hallway a total of 9 bulbs and everyone is now out! I need some advice I bought this house 5 years ago and when I first moved in I could hear chewing in the ceiling (like rodents) and then they stopped but the house was empty for almost 2yrs before we bought it. Any advice? thank you Mary