payasyouthrow 

Considering that a volume based accounting links charges to the volume of the used receptacle and not the amount of waste actually generated, by this system users are given the chance to take control on when to forward what amount to the collection service In this way they can make sure that the volume for which they have to pay is effectively used by them.

Aside from the flexibility in terms of collection frequency there can also be freedom of choice with regard to the size of the receptacles.