Fig. 44. Louse flies are present from May to August, however they are mostly common in June.

One should not refrain from having birds on the house out of fear for louse flies. The risk of them getting inside the house is, after all, very little. If they show up, they are easily eradicated with one of the usual pesticide sprays with pyrethrin. Treating nest environments with an insect powder will usually stop a louse fly infection.