Before we make a trap made of 3" dia. X 10" length pvc pipe. We put a chick on the end for bait, and put some wood barriers on its side, then we make ways for komodo to pass on the pipe. The pipe will be fix to the ground. So if they want to eat the bait, they need to pass the pvc hole which their body enough to fit. So thats it they cannot escape beacause they were trap on the pvc hole.