Where NOT to use it?Updated 10 months ago

* In hallways: cats spend very little time in hallways, so the efficacy would be reduced if used here.
* Near the litter tray: cats spend very little time near their litter tray, so the efficacy would be reduced if used here (if the litter tray is in the room where your cat spends the most time, there is no problem plugging it in this room).