Even after six years of use during regular hotel operation there is no evidence of any allergens in a Sanitized® treated mattress. This was the result of a long-term study in conjunction with the 4-star Hotel Stadthaus in Burgdorf/CH. The Dräger Bio-Check test performed was confirmed by the Laboratoire T.E.C. in Angelet, France. Colonization by bacteria, molds and mildew that produce the undesirable odors and quicker material deterioration and furthermore generates allergic reactions such as hay fever, asthma and skin irritations was analyzed.