Biofly
action When the flies emerge from the released pupae, they will lay eggs on or close to the manure, the developing larvae will predate on the house fly larvae [...] Make use of the specially designed release station, which can be placed inside the stable, outside reach of the animals. Put the content of the Biofly bag [...] manure only. In contrast to the house flies Hydrotaea aenescens adults will not irritate the animals as they stay low in the pit. Pack size 4,500; 9,000