The Methods Validation Team critically reviews bioassays and related methods used in the development and evaluation of vector control tools to identify and minimise sources of variability and identify gaps in our knowledge of how best to perform testing for existing and new tools and analyse and interpret the results. We address these gaps by developing consensus protocols, experimentally validating existing and new methods, and engaging with stakeholders to identify concerns and generate solutions, which include best practice protocols and supporting documents and data analysis tools.