Feliway Optimum Diffuser & Refill

We've had two cats who were constantly hissing at each other, and this diffuser has made a noticeable difference in just a few days—they're actually sharing the couch now. The fact that it lasts a full 30 days is a huge plus for me, since I don't have to remember to refill it constantly.

After my scaredy-cat started spraying by the front door, I plugged this in and noticed a real drop in tension between her and our other cat within a week. The fact that one refill holds up for a full 30 days makes it a no-brainer for keeping the peace without constant fussing.

The diffuser plug-in is easy to set up, and the refill lasts the full 30 days as stated, but I didn't notice much change in our cat's hiding behavior after the first week. It's not a miracle worker, but it might help if your cat is only mildly stressed.