null barrier

So far I prefer these umbrellas over using the elephant grass, which has to stick out a little above the ground in order to work. These umbrellas (North African picnic canopy) can be completely hidden under the ground and still prevent the peafowl from getting over them, but you need a lot of...

Hi All, Having lots of trouble with a split-level monkey enclosure. I built a wooden barrier at ground level, then an elevated second level hide for the monkeys.Around the second level, I used null barrier as there is a staff walkway underneath and entrance to a different habitat that I didn't...