How to kill hundreds of maggots?

There are hundreds of maggots near the dumpsters just outside of our apartment where everyone throws their garbage. They are completely surrounding the dumpsters and inside of them. They are an eyesore and completely disgusting when they become flies and come into our home. My brother and I are planning to go out and exterminate them and I was wondering what would be the easiest way? Is there any substance that we could buy in bulk to use on these pests or something?? Or a less expensive way??( whatever is easiest)