Between regular manure removal and manure accumulation are many intermediate procedures. These involve periodic, often erratic, manure removal. Housing and feedlot designs dictate how well manure removal can be accomplished and how often it is practical.
When automatic equipment is not involved, removal has to be with hand-tools and tractor-mounted loaders and scrapers. The frequency and completeness of manure removal using these methods is important to an integrated fly management programme.
It is difficult, if not impossible, to execute a successful fly control programme if the manure management programme is erratic and unplanned.
If manure is allowed to accumulate for long periods or for periods of irregular length, populations of manure-inhabiting predators and parasites build up.
Total removal of all manure in one short period of time will also remove most of the beneficial insects and mites.
Therefore, staggered partial removal over a period of 2–4 weeks is preferable to total removal within a short period of time.