Cette interdiction, malheureusement, ne garantit pas l'absence de tels pesticides dans les produits concernés, puisque l'environnement peut encore être contaminé par certains de ces pesticides dont la dégradation est lente.
Annex IX to the Directive lists those pesticides which are prohibited from use in agricultural products intended for the production of infant formulae and follow-on formulae. However, this prohibition does not necessarily guarantee that products are free from such pesticides, since some pesticides degrade slowly and still contaminate the environment, causing their residues to be present in the products concerned.