While a store-bought dust mite spray may work well ... oils contain compounds that are thought to both repel and kill insects such as dust mites. A 1997 study in the Journal of Allergy and ...

"Ta-da, you've just made a potent insect killer," she says. Mist the entire plant (including the topsides and undersides of the leaves) with this solution to ensure you wipe out all of the mites.