Hey,
Here is what I did to solve that problem.
When the blow and houseflies started to gain ground in my bins, I filled the bin with water and let it sit for a while. I can't remember how long. They drowned but the BSF were just fine when I drained the water off! It also killed the carrion...
One thing I quit doing was free-feeding their purchased foods. Now they get a measured amount and I check them often to make sure they aren't losing weight. That saved A LOT of money.
I use a lot of weeds. Chickweed makes up a large portion of what my chickens eat. Also, whenever I drain my cooked meat, they get the fat from the pan.
I use the deep litter method and there are plenty of little bugs living in it. The chickens love gobbling them up.
My husband has been...