Lavendar also works as a moth repellant. I keep lavendar sachets in with my wool and it does the trick quite well. That said, I just found some moth holes in a cashmere sweater I left in my mom's care for far too long waiting for her to put leather patches on the elbows. I finally took it back and reinforced the elbows with extra yarn myself, but by the time I used up the included repair yarn I had none left for the holes. Darn moths!