Spring has sprung and so have the sneezing fits! For the approximately 50 million Americans affected by nasal allergies (according to the Asthma and Allergy Foundation of America), it is the start of a miserable season. And while many people take refuge inside their homes in the hopes of escaping the worst of it, pollen, dust, and mold in the indoor air can aggravate allergy and asthma symptoms. Even undertaking a deep spring cleaning of your home may not help, given that more than 110 million US adults* do not change their filters as part of their spring cleaning routine (46%), according to a new survey among 1,136 U.S. adults released today by FilterBuy, conducted by Radius Global Market Research in March 2018.