DAP You can get at most pet supply stores it is short for Dog Appeasing Pheromone, It puts off the same pheromone that a mother dog does to keep puppies calm but works for dogs of all ages. It was recommended by my vet.
The neroli hydrosol is the water used to make essential oil, You will probably have to order it. This is where I got my bottle and I just spray a little on copper's clothes or use it to wet his hair before I comb it (double duty
) I have mixed it with chamomile in the past. The smell of Neroli is a natural relaxant and calms nerves. I will attatch the link from where I ordered my bottle;
Neroli Hydrosol(Orange Blossom Water)