Examples of spot-checking forms [see Additional file 5] for Municipal Mosquito Control Inspectors. A. A typical example signed on the bottom left by a City Mosquito Surveillance Officer to show it has been checked for consistency and signs of problems requiring corrective action by management at city, municipal and ward level. B. An example of where an inspector has found poor coverage of potential habitats for Anopheles larvae by a CORP but failed to highlight it or record any corrective action. Note the query of the City Mosquito Surveillance Officer at the bottom.