Living in the Pacific Northwest requires moth repellent. Growing up in North Carolina, a moth getting anywhere near my favorite sweaters was practically a nonissue. Windows were usually closed up all summer (I always say it was 68 degrees all year long). But here in Seattle, air conditioning is not the norm, and windows are usually open during the warmer months. I actually kind of forgot about those pesky moths until a few summers ago when several of our sweaters were eaten up. Now every Spring, our sweaters are cleaned well, folded and stored for the season, and I make up a big batch of this lavender and cedar mix and fill up lots of muslin bags. It seems to work, and has the added benefit of making our closet smell great.