The aim of this paper is to evaluate the effectiveness of a sequence of voluntary agreements between the Flemish environmental administration and individual municipalities to limit household production and disposal of garbage. In addition we use a technique (dynamic difference-in-differences) which allows us to construct a relative ranking of the voluntary programs. Since the design of the successive voluntary agreements is not exactly identical, results of this relative ranking can provide an interesting indication about the impact of the different program characteristics on the effectiveness of the respective programs. Results suggest participants of high level voluntary agreements (with stricter waste targets) do not necessarily achieve higher progress in waste reduction levels compared to the non-participating municipalities. We argue municipalities chose to subscribe at this ambitious levels if they can easily achieve the targets, making the agreement less effective and causing this unexpected result.