Xterminate Dust Mite spray contains 0.1% Cypermethrin that quickly gets to work on dust mites The active ingredient effects the dust mites nervous system and quickly leads to their death. With a professional strength formula for that is approved and safe for amateur use, the spray can be sprayed on sofas, carpets, bed frames, skirting boards and other soft and hard furnishings with no staining or smell. (We always recommend spraying a discreet area first) Provides protection for up to 6 weeks once dried. Dust Mites are a common household problem and can affect users with asthma and other breathing difficulties making their conditions worse. Approved for amateur use and simple to use, applying as both a spray and surface treatment. Supplied with a trigger for simple and easy application around the home. Directions for use: Surface spraying treatment: Apply 20ml per square metre, slightly wetting the surfaces to be protected. We recommend spraying in monthly intervals for control and maintenance purposes. Space treatment: Apply 1ml to 4ml as a fine mist per cubic metre.