I always tell people with allergies to wash bedding in hot, at least twice a month, and give yourself and any bed sharers (partners, kids, pets, whoever went outside! My cat doesn’t, so he gets a pass.) a good rinse. This way you’re not sleeping with as much pollen. However, not everyone can rock the short hair don’t care as well as I do, so here’s some help.
Of course, you don’t want to encourage mold, so put a towel over your pillow or encase it in a membrane barrier.