we are dealing with a serious infestation of fruit flies and need some help. We had food buildup in a piece of equipment that did not get cleaned out because it somehow was forgotten about. We identified the issue, and cleaned up all the debris, however, the room also houses silos and we are not able to fog to kill all the adult fruit flies. Our pest control company is not able to suggest anything (we are looking for a new one for other reasons) so we are stuck with thousands of flies and no way to kill them.
Has anyone encountered such an issue? Is there anything you've used that kills insects but is safe on food contact surfaces? Wet clean area. Our silos are behind giant plastic curtains so a spray is OK, just no fogging.
Thank you for your help in advance!