Camphor has a pungent aroma and is traditionally associated with the banishing of moths to protect your clothes.
Camphor is a traditional ingredient of mothballs and these can be made at home by adding 10 drops of White Camphor to a cotton wool ball and placing these in cupboards, drawers, etc. (They should be kept well out of the reach of children and pets). To keep other airborne pests at bay, try adding 5 drops of Camphor to a burner or diffuser.
This is sourced from China. It is steam distilled from wood, root stumps and branches.