This animal repeller is practical and robust, designed for outdoor use. It is a safe and effective repellent that will keep most animals, including cats and squirrels, out of your garden, automatically giving them a short spray of water when they pass in front on the motion sensor. It can also be used to keep herons away from your precious fish pond. The repeller should be connected to any standard garden hose, then once switched on, it will not trigger any water until the sensor detects movement, so you will not waste any unnecessarily.