Lately, I've been having a lot of trouble with fruit flies around Zees cage. I usually give her some fresh fruits and veggies at about 7:30-8:00 and by 8:15 their fruit flies all over the place. obviously I can't just stop giving her fresh foods, and sticky traps or sprays wouldn't be safe. Before I adopted her I just used pesticides which isnt an option now. Any bird-safe suggestions for flies?