Pestblock is a fast, effective and economical solution to achieving a high standard of finish when installing a dishwasher. This simple but innovative product is designed with a plate that comfortably covers a standardized cut-out. By incorporating the standard universal cut-out into CNC production or at the convenience of the factory workbench, installation is made more efficient saving time and money with the addition of rendering a clean aesthetic. The high quality ABS plastic fitting has been cleverly designed to self-locate and be used for left or right hand application to further streamline implementation. After a dishwasher has been Pestblocked, a bead of sealant is run around the inlet and waste hoses to prevent any pests entering through the cavity. Pestblock can also be retro fit in most circumstances.