what do you mean by box? I have a room, which i provide co2 and air conditioning, with a large carbon filter that sucks air out and fuels the cooling (duct) systems for the lights. Air coming in makes its way into the room im guessing from cracks. Im then assuming that i need to create a fresh air intake to the room and provide dryer sheets there? Is it the smell that deters them? That would be amazing bc these lil bastards have managed to infest 2 plants and I cant seem to get rid of them. Any other info AT ALL is greatly appreciated!! Thanks.