Abstract: An insecticide packet for killing biting insects comprises an envelope enclosing an insecticide and having a permeable web that is penetrable by the mouthparts of a biting insect. The permeable web allows insect attractants to migrate from within the envelope to the ambient environment. The envelope may be enclosed within an outer protective pocket. The insecticide packet is provided with a plurality of pins extending outwardly from the packet to discourage non-targeted animals from attempting to ingest the envelope or its contents. The packet is provided with a buoyant support arranged so that the permeable web is above the water line when the packet floats on the surface of a water body. The insecticide includes a stomach poison mixed with a liquid food that is preferred by the biting insects, such as cattle blood. Volatile insect attractants may be added to the mixture of stomach poison and food.