Commercial, institutional, and C&D waste may or may not be the responsibility of the municipality. In practice, in lower-income countries, where environmental legislation may be weaker, these tend to fall under municipal responsibility. They can either manage the waste themselves or contract a private sector waste management company, or they may sometimes be offered to pay to 'opt-in’ to the city’s municipal waste management service and generally are expected to pay a higher price for the service so as to not further burden the municipality that delivers the sen/ice, and instead to improve cost-recovery by cross-subsidizing the service.