Abstract: The invention relates to a rodenticidal bait by ingestion for at least one target harmful rodent ingesting this bait for an ingestion period, called consumption time, imposed owing to said ingestion; the rodenticidal bait comprising: a composition, called composition of AVK(s), of at least one compound that inhibits vitamin K recycling; a composition, called vitamin D composition, of at least one hypercalcaemia-causing vitamin D, and at least one excipient that is edible for target harmful rodents; characterized in that: said composition of AVK(s) is present in the rodenticidal bait in a proportion by weight, called proportion of AVK(s) by weight, that is not zero and is not lethal on its own for any target harmful rodent, and in that said vitamin D composition is present in the rodenticidal bait in a proportion by weight, called the proportion of vitamin D by weight: sufficient for said vitamin D composition to be lethal on its own for at least one target harmful rodent, and below a minimum proportion