Fipronil is commonly used to get rid of fleas ... centring on two firms - Poultry Vision, a pest control firm from Belgium, which is alleged to have sold the treatment to a Dutch poultry farm ...

Eggs, coming mainly from the Netherlands, have been found to contain fipronil, a substance used to kill lice and ticks on animals that is banned by the EU for use in the food industry. It is ...

The active ingredients, such as fipronil or permethrin, work to repel and in some cases kill when a flea or tick bites.