Girls in households that use solid fuels for cooking spend 18 hours a week on average gathering fuel, compared to 5 hours a week in households using clean fuels. Data on the type of device or technology used in the home for the purpose of cooking, heating and lighting is also needed. At present, most of the data collected through household surveys focus on identifying the primary type of fuel or technology used for cooking and disregard information in cases where various types of fuels might be used for different purposes within the household, such as heating and lighting. Expanding the detail of related information that is collected through surveys can provide more accurate estimates of the health and environmental impacts of this practice.