Hi all - can I ask for recommendations for dust mite proof bedding please? There seems to be a wide range of prices. Don't want to skimp if there is a good reason not to! My 8 y/o daughter has been getting steadily worse, rhinitis symptoms now really bad during the night. Have done all the usual hoovering, damp dusting, removing soft stuff and freezing pillow. She has a NaturalMat mattress with essential oils as dust mite repellants. So next step is to seal all bedding in to proofing protectors. Any other advice much appreciated - thanks