At first it seemed strange to me too, If I released a product and discovered it had a customer base that I wasn't aware of I'd be quite a happy chappy. But a cosmetic skin product being discovered strong enough to kill, even if it is just midges, could be a bit of an image worry. There could be truth in the rumour.
Saying that, we still eat and drink HP Sauce and Coke.
Maybe "Avon Midge Repelant" could appear on the market soon. They already know how to make it, just needs rebranding.
David