treat (one) like dirt
To treat one very poorly or disrespectfully; to treat one as having no value. I'm not surprised that so many of your employees are quitting—you treat them like dirt!
treat someone like dirt
COMMON If someone treats another person like dirt, they treat them very badly. We, the fans, buy the CDs, and pay to go to the concerts, but are more or less treated like dirt. As long as you're thinking about her, she can keep treating you like dirt.
treat someone like dirt
treat someone contemptuously or unfairly. 1996 Just Seventeen He was only nice to me in private—as soon as he was around other people he'd treat me like dirt.