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.