05-06-2010, 03:36 AM
I would also clean the cages throughly and change all the bedding, etc. Then, since they will still be in your house and around, you need to cover the now clean cages with a tightly woven netting barrier that is flyproof. Fruit flies are small, so this will need to be no seem netting of some sort. The life cycle should be fairly short, so that should also let you see in the next week if there are flies on the inside or the outside or both (assuming they aren't crawling through or under the net, which they will try to do relentlessly: I would duct tape it down or something like that).