To reinforce the message, and to make sure that farmers know exactly what they are looking for, they have been using posters with huge images of the tsetse fly itself.*
This has, however, not had the intended effect.
Two farmers were overheard talking to each other in a local dialect in the south, having come in to town on market day and seeing the new poster:
“Thank God we don’t have huge flies like that here.”
* I don’t have a photo of the actual poster – if anyone does, I’d love to have a copy of it.