Our cockroach bait contains vegetable oil, glucose. It can kill cockroaches quickly and effectively. How to use it is simple: 1. Cut off the bottom of each cockroach sticker bait. 2. Uncover cockroach stickers. 3. Remove the double-sided tape at the bottom and attach it to the hiding place where cockroaches are often seen or roost. And can kill cockroaches quickly, leaving no residue.