Protection not Necessary? Are Flies just a Nuisance?
We Protect You: Black Flies – A Risk For Humans and Animals
The black fly nuisance occurs from morning to evening close to rivers. Wear light colored clothing for your protection as they are highly attracted to dark colors.
Prof. Dr. Friedrich Kuhlow showed that IR3535 can protect people against black flies in 1975. He tested 25% IR3535 in an alcoholic solution and found that volunteers were protected 98.6% for 5 hours.
Sand Flies – Tiny but Dangerous
Another fly which poses a danger is the sand fly. This tiny, long-legged fly bites more often during the evening hours. Oily hairs allow this fly to appear whitish when illuminated („asa branca“). In addition to possible allergic reactions and inflammation around the affected area, sand flies transmit fever, bartonellosis and leischmaniasis in many parts of the world. Again, you can protect yourself with clothing and insect repellents.