Now available from Wildlife Control Supplies (WCS), Metex RatTape is a rugged rat and mouse proofing tape. It features two layers of butyl tape that sandwich a dense, stainless steel mesh core. According to WCS, RatTape is a recent innovation in pest proofing: Its innovative range of tapes are sticky, tough, flexible and virtually impenetrable. The tape is ideal for covering gaps, cracks and holes; it sticks to most building materials. It is 1.968 inch (50mm) wide, non-toxic, and can be painted to match its surroundings.