Three factors to eliminate: food source, moisture, and fly access
The source identifies three conditions that must all be present for a maggot infestation to take hold: a food source, moisture, and physical access for flies. Removing any one of these breaks the reproductive cycle.

Food source control means wrapping meat scraps, dairy packaging, and overripe produce tightly before placing them in the bin, or disposing of them in a sealed outdoor container as quickly as possible.
Moisture management involves keeping the inside of the bin as dry as possible, since dampness accelerates egg hatching. Fly access is addressed by ensuring the bin lid closes fully and fits without gaps, denying flies the opportunity to land on waste in the first place.
Chemical-free methods as the recommended approach
The approach advocated here relies on what the source describes as "kitchen science and farmhouse wisdom" rather than chemical pesticides. The underlying logic is that eliminating the conditions flies need is more durable than killing larvae after they appear.

Practical measures include using bin liners consistently, cleaning the inside of the bin regularly to remove residue that could attract flies, and positioning the bin away from direct heat sources that would raise internal temperature.
The source does not cite specific studies or public health authorities for these recommendations. The advice is presented as experience-based household practice, and readers with severe or recurring infestations may wish to consult local pest control services for additional guidance.
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