Cats will often rub their faces against objects in their environment. They are leaving behind a pheromone which marks their territory as being a safe place.  Feliway is a synthetic hormone which replicates this.  Changing a cat’s routine, eg keeping them in during firework displays can sometimes lead to unwanted behaviour eg scent marking scratching and tension between the household cats.  Feliway is proven to reduce or prevent these behaviours and helps them adjust to their new environment.

…  Anne