As studies show that 40% of dust mites are still there on the mattress even after hours of cleaning. And we can’t deny the fact that we spend 1/3rd of our life on the bed to sleep. The simple placement of laboratory tested DREAM CARE Mattress Protector may reduce the exposure to house dust-mite allergens and we do highly recommend you the use of Mattress Protectors to safeguard your family from allergies and other harmful particles.