They’re basically mining the same places every viral clip sparks to life—TikTok’s trending page, Reels audio charts, Facebook’s Ad Library and Reddit’s r/videos or niche subreddits—and then reverse-engineering what works. They’ll grab 10–15-second UGC-style clips (often from TikTok creators) that already have engagement, swap in their own branding and calls to action, then A/B test them in rapid loops until they see the winners. Spy tools like BigSpy or AdSpy give them real-time intel on which ads are getting clicks, and daily scrolls through “For You” or “Explore” unearth fresh sound bites. By the time most of us wake up, these dropshippers have already filtered out the noise, snagged the hottest slice of content, and are firing off scaled campaigns before anyone else even knows the trend existed.