the valle de mexico should learn from the dutch experience that without a system of laws and regulations for waste materials and control measures established from the outset all waste could end up in a landfill if the authorities want to promote the participation of private wasteprocessing companies it needs to give them the possibility of developing profitable activities with mandatory and prohibitory provisions and taxes a better grade of waste processing can be enforced table presents a nonexhaustive overview of those policy instruments which can be designed and implemented in different ways to influence their effectiveness those presented in table are options authorities in the valle de mexico might explore