Homebrew Pigeon Deterrent

Pigeons can be quite the pest around the home, and this is where the DIY Pigeon Deterrent device comes in handy. It uses a motion-activated water sprinkler to chase those pesky birds away, preventing them from pooping in your pool. It requires a fair bit of DIY knowledge, but the result is definitely fun. Just remember to turn this homebrew solution off whenever you organize a poolside party where everyone is dressed to the nines. Environmentalists will probably cry foul as they claim this is one of many ways to waste water, but is there a better solution?