captainmorgan
Well-Known Member
Not sure, I have a pretty tight room and a exterior door with weather stripping and threshold and a hepa filter on my intake air source. I tried to caulk and foam ever nook and cranny. I only go into the room with clean clothes and remove my shoes when entering. There are lots of house plants upstairs so maybe they somehow reintroduced themselves from upstairs after the shut downs, they are voracious soil predators.