hi i have a wasp nest in the ceiling which is completely inaccessable to get at. they entered through a gap in the wall outside. you can hear lots of scratchy noises and they have made a small hole in the plasterboard in to the room and are now coming out into the room. anyway, short of ripping down the ceiling or taking off the roof, i was wandering if its ok to leave them, will they die off at the end of the year and thats the end of the problem, or do they hibernate there or return to the same place next year. thanks