Fipronil is commonly used to get rid of fleas, lice and ticks from animals but the European Union has banned its use in the food industry.
Italy says it has found traces of fipronil in two eggs samples, making it the latest country hit by the Europe-wide insecticide scandal, while a batch of tainted frozen omelettes was also withdrawn.
The two positive samples were from a total of 114 samples so far tested. One involved Italian-sourced eggs, while the other was still under investigation, said the Italian health ministry.
Separately, a regional official said a batch of frozen omelettes containing traces of fipronil had been withdrawn from sale in Milan.
The omelettes were supplied by German group Kagerr and distributed by an Italian group, a Lombardy regional official told reporters.
He said 127 units from the batch had been withdrawn, but 117 had already been sold to consumers.