What is the primary breeding medium for houseflies?

The primary breeding medium for houseflies is animal manure. This substrate provides an ideal environment for houseflies to lay their eggs, as it contains the necessary nutrients and moisture that support the larvae’s development. Animal manure is usually abundant in organic matter, which is crucial for the immature flies to feed on once they hatch.

While other substances like food waste, fruit, and vegetable scraps can attract flies and may serve as breeding grounds to some extent, they do not offer the same favorable conditions as animal manure. Food waste can often dry out or be less nutritious compared to manure. Similarly, fruit and vegetable scraps may not provide the level of protein and moisture that is essential for housefly larvae development. Therefore, animal manure is recognized as the most suitable and effective breeding medium for houseflies.