Hello @fruityexplorer! Thank you for asking a great question. If you are raising a few chickens on your own, say around 10, we do not recommend feeding purely food waste to your chickens (though we understand it is a common practice) since most of human food waste consists of processed foods with sodium and sugars. Moreover, grubs have been part of the chicken's natural diet, and many homesteaders and small farmers have built worm compost bins to process the food waste into protein (the grubs themselves) and organic fertilizers (the grub's frass).
Now, if we look into a commercial scale, let us consider the amount of land that is needed to farm corn and soy. There are cost induced in farming these two commodities. These commodities then go on to be processed into chicken feed pellets, further increasing our carbon footprint on earth. Moreover, the broiler chickens who are fed with these processed feeds require antibiotics (additional cost) to be resistant to fowl typhoid.
On the other hand, our grubs are one part of the chicken's natural diet and scientific studies have proven that chickens fed with the larvae are naturally more resistant against diseases. On top of that, our grubs help REDUCE carbon footprint on earth by converting food waste into protein, thereby greatly reducing greenhouse gas. Imagine if all the tons of food waste (we're talking about pre-expiry flours, oats, milk powders from big factories that never made it to the supermarket shelves) are sent to our grubs farm instead of landfills, being converted to chicken feed - we can be sure to reduce greenhouse gas and give our chickens a better, more natural diet.
I hope this answers your question!
RE: Malaysian Poultry Farmers Spend 74% of Their Cost On Feed!