Review on Say Goodbye To Cat Tension With ThunderEase Multicat Calming Pheromone Diffuser Kit - Powered By FELIWAY! by Dale Hing

This definitely made a HUGE difference in settling my very territorial boy down. When he sees, hears, smells (?) another cat/animal outside he goes INSANE! And he hill chase and tackle his brother (litter mate, never been separated). Normally they get along very well, so this behavior is all to do with the new neighbor's outside cats. ThunderEase made a huge difference, Grumpy Boy now just chases his brother out of the room. I am ordering a second one to place on the other side of our great room to see if it will work even better (I think our room is too big/open for just one)