its not a maggot check this out. I got them outdoors. My local green thumb and me sat down to figure out what it is. It is layed by a fly but not a house fly. Almost looks like a retarded mesquito thing, hard to explain. Wish i could remember the name of it so i could google it. They bore into your stalk and eat and shit their way up to the colas. You'll notice they seal up their entry point up with shit. Then the stalk gets fat and bulgy like. I cut the stalk open the long way and take them out with a razor or tweezers. My stalks are healing up nicely too i might add.