Paul Saladino· MD
So, for people that are listening, you won't see it, but essentially it's just a it's called a gravity plate. So, a lot of mold companies do air testing where they just suck air out of the middle of your air column in your room, and they say everything's fine, but the mold spores fall to the ground. So, these agar plates have essentially a gum on them that will hold on to the spores, and then these things can start to colonize.