This is why either you use a wide variety of predators to control the population (including remis and flans in this since they probably would eat an Aya) or you make the controlling yourself (in some places the hunters take care of controlling the population when animals go overboard.)
randomhaxofkindness said: Give pencil and paper a try.
Tried that a while back. Did a test run and had something like a 3000% improvement on general quality. Unfortunately I have no easy access to any way to xfer something from paper into a digital medium.