i’ve been trying to help my son’s dust allergies and honestly, i must’ve bought half of amazon at this point. the cheap ones are useless and the “medical-grade” ones are just silly money.
after a lot of googling, i learned to look for covers with proper pore size ratings (under 10 microns) and lab tests to prove they work. i picked one from a brand called iDustMite mid-range price but actually made a difference.
sharing in case it saves someone else a bit of trial and error (and a small fortune).