Research by the Biological Resources Division of the U.S. Geological Service has produced several designs for a barrier that Brown Tree Snakes cannot breach. In the CNMI the barriers are used to enclose a cargo quarantine yard at the ports of entry. Cargo is placed inside the yard for up to three nights. Along the inside of the barrier snake traps are placed at regular intervals. The idea is that snakes exit the cargo, run into the barrier and follow the edge and running into the traps. While not 100% effective this technique places a snake in an area with a much higher probability of being trapped than out in the forest. This area also provides a suitable place for cargo inspection by Sniffer Dogs.

Presently there are snake barriers at the Rota and Tinian seaports. It is planned to construct one for the Saipan port in late 1999 or early 2000.

Shaw Taisacan inspects traps within the containment yard.

Wire mesh type barrier on the cyclone fencing at the Rota seaport. The holes are too small for snakes to crawl through and the mesh is smooth enough so that the snakes cannot climb up on it. The bulge at the top of the mesh keeps larger snakes from "free standing" and getting their heads on the top of the barrier providing an anchor for them to then bring the rest of there bodies up and over. Yes, Brown Tree Snakes can do this. The bulge forces the snakes to lean back when the free stand and then they fall over.