Well if this the place I have a couple of CS stories. I loved the stuff. You could always tell when the dogs got it up the nose - went ballistic and I smiled
One problem with it was how fine the powder was. I usually carried a canteen full of it with a C4 and a short time fuze taped to the back. But I punched a small hole in the top and taped it over with layers of black tape. This was for pouring it out on the trail for the aforementioned dogs.
One mission I was setting on the pad and the Kingbees were doing something so we weren't loading right away but the rotors were turning. Just about the time we get into the choppers everyone came down with the running nose and red eyes. Somehow the vacuum sucked that stuff right through about 4 layers of black tape and was gassing us and the crews... none of which was humored at the time.
Changed methodolgy later to small insect repellent bottle for dogs and canteen tightly sealed (no holes) for the boom version...