If there is so much destruction by a large population of varmints, why won't your government invest in some kind of eradication or population control? Seems to me that birth control for the species (capture & release or other method) would help reduce numbers. We've done it in the U.S. with certain species with pretty good results (they basically breed themselves out of existance because they are shooting blanks).
Oh, suggestion is NOT intended to get rid of the annual festivities. I just wish I knew about this earlier... I could have planned a vacation around it!