A Belgian company, Poultry-Vision, based in Antwerp, has already admitted providing the insecticide – called fipronil – to Chickfriend through a source in Romania. It is a common ingredient in veterinary products for getting rid of fleas, lice and ticks, but can cause abnormalities of the thyroid and the kidneys, and potentially seizures and death, if consumed by humans. It is not permitted for use around animals destined for consumption.