Brothers Kirk and Jacob McKinney started Junk Teens with a $4,000 pickup truck.
A turning point came when they reinvested early profits into an $80,000 dump truck.
They now operate in multiple markets and are on track to top $5 million in revenue in 2026.
Kirk McKinney was riding bikes near his Massachusetts home about six years ago when he came across a goldmine: A dump filled with plenty of junk, sure, but also speakers and electronics.
"Someone had thrown away this perfectly good pair of speakers," he told Business Insider. "I asked the guy at the dump if I could take them and he said yes. I just couldn't believe that."