Public policy should see marketing as a facilitator, not a manipulator. The legal regulation of advertising and marketing is not within Scotland's powers, but all public agencies have control over public space and many aspects of sponsorship. Ideally all advertising targeted at children should be banned. Certainly everything possible should be done to remove or minimise advertising in and around schools (including commercial sponsorship or provision of educational materials). The public sector should not be encouraging advertising and should not be planning it into new developments. The same spaces can be used for social or cultural purposes. Other forms of consumption which have particularly negative health and environmental impacts should also be challenged, for example, where possible the cost of removing litter should be passed on to the enterprise causing the litter.