Even larger than the THE Original CAN , THE GREAT BIG CAN is made for longer and louder calling. It reproduces the pleading bleat of a doe in estrus, making it perfect for the rut. It's simple to use, just turn it upside down and back up for a perfect bleat every time. 100% freezeproof. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Deer Calls.