Jerri and all, I've had absolutely amazing results with cinnamon essential oil applied with a Q-tip in the cracks of my window frames and anywhere else ants are entering . The ferrets can't get at it (nor do they seem to want to) and the ants steer clear. One application seems to last about two weeks before the more adventurous ants start thinking about blazing a new trail across the line. You might want to make sure your ferrets aren't cinnamon fans before trying it. I've geard garlic and cumin powder work well too. I like the cinnamon best - makes the room smell nice, always a plus! :-) Good luck, Marin [Posted in FML issue 3461]