https://www.sureflap.com/products/det... Raccoons at Shepreth Wildlife Park try to break into the SureFlap Microchip Pet Door to retrieve food treats. This was part of a product testing programme designed to test the security of the SureFlap Microchip Pet Door. The SureFlap Microchip Pet Door has a special custom mode to deter raccoons. Please note this custom mode is not currently available on the SureFlap Microchip Cat Flap.