Some cats will [also] be annoyed just by using a collar on and that should defeat the intent.” Elements Satchu states that pheromones, rosemary, chamomile, and tryptophan are a number of the best ingredients to search for, however other products also contain calming aids like passionflower, colostrum, L-theanine, and jasmine. https://rowanhwzot.pages10.com/the-fact-about-cat-stress-reduction-products-that-no-one-is-suggesting-70186593