I got blasted before for recommending “unconventional” devices before, but negative ion generators do work.

The walls next to the critter will eventually be covered with dark ick (better’n floating around and/or getting into your lungs, though).

They attach a charge to the particles, which then stick to whatever’s around. Again, preferably a wall or even furniture, instead of your juicy internals. Kinda like rubbing a cat on your sweater and sticking him to a wall, to be held there by static electricity.