Consumer information Dust mites live on human and animal skin scales and their droppings contain a protein-like substance which is known to trigger asthma and allergies. Reducing dust mites helps lower the risk of asthma attacks in sensitized individuals. Bosisto's Eucalyptus Dust Mite Spray is highly effective in killing dust mites with no harsh chemicals. For an even more effective treatment, wash bedding with Bosisto's Eucalyptus Dust Mite Wash as part of your Dust Mite Control Program. For ongoing allergy control, use Bosisto's Allergen Laundry Liquid.