Two years. According to the instructions on the use of the gel bait for killing cockroaches, the shelf life of the gel bait for killing cockroaches is two years, and it is a product specially designed for killing cockroaches. Dabai is a trademark applied for registration by Bayer Intellectual Property Co., Ltd. in China Trademark Online, which was founded in 2003. The trademark registration number is 3628 154, and the trademark category number is 5.