CalmDown by KRUUSE Cat MultiUse 3 Button Kit

Our skittish rescue finally stopped hiding during thunderstorms after we plugged this in. The pheromone technology seems to genuinely take the edge off without making him drowsy. Even my older cat, who usually ignores everything, started spending more time in the living room.

The three-button design makes it easy to adjust the pheromone levels depending on how anxious my cat is feeling. Within a couple of days, the hissing and hiding during thunderstorms stopped completely.

Plugged the diffuser in the day the new kitten arrived, and within about two days the hissing at the doorway mostly stopped. The pheromone tech seems to actually do something, which I was skeptical about. The three-button setup makes it easy to switch between modes depending on how tense things get.