I woke up this morning and looked at my S.W.Giant on my windowsill. There was one new trap which had just opened up. There was more sun at one end of the house, so i moved the aqarium (carefully) to a sunny windowsill. After breakfast i went to look at them again. The very same trap that had just opened had closed! The aquarium has a lid, so NO flys or insects could have triggered the traps. The only thing which i can think of is that it was triggered when i carried it to the sunny windowsill. But i was carefull, surely the traps are not incredibly sensitive ? This has never happened to my normal Vft which i move regulary to the sunniest position in my house.