I have dispatched two chicks with this method. I used a cup of each in a gallon size ziplock bag. I actually put the chick in one bag ran a 1/2 " out of the bag and zipped it as tight as I could and sealed with duct tape. Then put a cup of baking soda in another ziplocc with a drinking cup with vinegar in it, put the other end of the hose in this bag, sealed it up and then dumped over the cup with the vinegar. It was all over in about 2 minutes. Good luck.