We pride ourselves in being the foremost authority in identifying products that are safer and healthier for people affected by asthma and allergies, and we take that responsibility very seriously. Unlike some “Seal of Approvals,” we do not accept paper-based evaluations of manufacturer data. Each standard is written and approved by a medical and scientific advisory committee using best-in-class data. We require each product to be tested at an independent approved laboratory facility in compliance with the relevant standard in that product category. Testing takes approximately 12 weeks and involves the use of climate-controlled chambers using live biological agents by a team of scientists. Aside from the allergen and chemical testing, we also take into consideration other factors that are important to consumers, such as comfort physiology and physical performance to ensure it can withstand the necessary cleaning recommendations.