I explored water moat as one of the solutions for trapping Asian long-horned ticks (Haemaphysalis longicornis) that were attracted to CO2 reservoirs. Before employing the idea in the field, I conducted an observation in the lab, to find out if water was enough to keep the ticks contained in place. As you can see, from the video, water doesn't appear to affect H. longicornis; the ticks can swim through and out of water moats.