Whether you're trying to keep your own cat off the counter or the neighbourhood cats from clawing up your outdoor furniture, this water gun with an infrared trigger will stand vigilante night and day.
Lifehacker reader Oliver wrote in to share his problem and his very creative solution:
Recently a cat started coming by a window in my girlfriend Nicole's apartment. The problem is that the cat fights with Nicole's cat through the window. We've come home to find Party (Nicole's cat) pacing and meowing restlessly and broken dishes in the sink.
Now, to be honest I'm not a huge cat person. I am deathly allergic to them and sometimes he wakes me up early in the morning by meowing for food. But Nicole loves Party. And so by transitivity of affection, Party and I are pretty close. And besides, no one likes a sink with broken glass in it.
I know that you can buy cat repellents (eg coyote urine), but Party absolutely loves sitting on the sill of that one window, keeping watch over us. Given that Party isn't keen on sharing this window with another cat, I doubt he'd be appeased by the notion that a coyote had just peed outside his beloved sill.
The solution was to build a "catling" gun to mow down the offending cat in a volley of squirt gun blasts. Check out the link below for pictures, an electrical diagram to build your own, and of course a picture of Party the now less-stressed cat.
Have a fun electronics-focused weekend project of your own to share? Let's hear about it in the comments. Thanks for sharing Oliver!
Build Your Own Catling Gun [Oliver Serang]