The Black Soldier Fly is completely harmless to humans. They do not carry disease, cannot bite and are only beneficial with their decomposing capabilities. They will also not eat your plants or grass. Get excited if you’re lucky enough to attract them into your composting bin.Once the larvae have completed going through the food waste, scoop the very wet waste out of the bottom of your bin and mix it in to the soil in your garden. This is incredibly rich, healthy trace elements you’re adding directly into your soil. There will be a slight “organic” smell to the waste. Don’t stress, just mix it in.