Unicorns leave a trail of happiness behind them. Watch for newborn babies, happy couples, and tears of joy. If you see them, a unicorn is probably nearby.
Taste
When a unicorn becomes relaxed, it craps out sherbet ice cream. If you spot a pile, it means you're close.
Entrap
Once spotted, set up a perimeter of claymores. Ensure proper spacing between claymores; you'll want to entrap the unicorn in a blast zone that'll splatter it straight to hell.
Pre-heat
If the unicorn survives the claymores, torch it with a flamethrower. This will not only slow the unicorn down, but improve the flavor of the unicorn for later on!
The kill
The best way to take down a unicorn is with your mouth. Run, Bite, Enjoy!
