When we offer suggestions to our clients about what they can do to deter graffiti vandalism around their property, this generates the most interest—the Motion-activated water sprinkler. Since paint needs a dry surface to adhere properly, the motion-activated water sprinkler makes a beautiful addition to any anti-graffiti strategy. Some properties have lovely flowerbeds along the outside; in areas like that, it may be harder to block the visibility of an area highly targeted by graffiti. A motion-activated sprinkler placed out of sight can help by making the surface of the area unfavorable the taggers, along with sending them home feeling hosed.
There are a few different motion-activated sprinklers on the market. My Graffiti Removal Guy recommends the one made by Orbit. The one made by Orbit will allow you to connect as many typical unit to unit sprinklers as you need. Orbit's unit will allow you to control multiple sprinklers with one motion sensor, you to set it for day or night use. Since most graffiti vandals work at night, these settings are beneficial to save water during the daytime. You can also use a hose bib timer if you choose a motion-activated sprinkler without the am/pm setting. Make sure to read to packages well on other sprinklers. Typically, they don't allow unit to unit connections; the flow-through is constant, so you have to have multiples of their units to protect a long wall.