Best way to repel moths?

Clothes moths or the ones in the kitchen cupboards? They're different problems. For clothes: the larvae go for wool and anything stored dirty, sweat and food marks are what they're after. So wash or dry clean before putting things away, store wool in sealed bags or boxes, and hoover the wardrobe corners and under the bed. Cedar and lavender help a bit but they won't fix an existing problem. A pheromone trap in the wardrobe tells you if they're still about.