For a few days we've been getting flying ants in a bedroom and the study next door to it. Can't work out how they are getting in. Rooms are crumb free. Keep finding an odd one on the floor and a couole on the window. My DS is not impressed (neither am I, but he's scared). DP has his head in the sand. There's loads of ants outside (I've sprayed). Windows kept closed. Would you spray in a bedroom?,