The second category is comprised of constraints that can be addressed through simple strategies, many of which are available to smallholders but are often not accessed and for which the impacts are readily apparent. For example, disease is typically minor and sporadic in extent and adequately controlled by a vaccination program run by the local extension agency (Dinas Peternakan). Bull access can be addressed through the promotion of bull retention by households and the provision of fee-for-service mating to other households. The provision of adequate stock water can be addressed through simple low-cost technologies such as rooftop rainwater capture and storage in wells or covered pits, dam construction, and the recycling of household grey water into drinking troughs.