Glad you got those filters.
I don’t envy the garbage collectors...when Mt St Helen’s did her thing folks around Portland simply swept up the ash, put it in their garbage cans out for the garbagemen to pick up...ash is very dense/heavy evidently... so this was the source of a good number of back strains of the garbage collectors at the time.
Maybe we will get some instructions when the weather has folks starting to clean up.