I have lived in the same home for 27 yrs. Nothing has changed! There is just furniture in my basement, absolutely no food. The basement is "all of a sudden" infested with rats. I have set 6 traps... I have only one trap left. Now I must find the rats in the other traps. Yuk! Why... all of a sudden? I'm afraid to used poison as I have a dog & a cat. Please, if anyone can help? All night long they are in the furnace ducting... having a rat party & keeping me awake.