OK. Well, if you ever want to try it, let us know. I watch all of the home improvement shows and have done quite a bit in our home. It's not rocket science and stuff like this is actually really simple (even more so if you're not overly concerned on how it looks--that's the part that takes time and skill=craftsmansip). You could fill cracks and holes with almost anything from rags to tissues. Anything to stop those buggers from getting in!