A radio station in Canada is trying to do what Scooter Braun can't ... get Justin Bieber into rehab ... but the station has a secret weapon.
Hot 89.9 in Ottawa just radioed out to its listeners -- Justin is persona non grata on its airwaves UNTIL he checks himself into a facility to get badly needed help for drug abuse.
So far Justin has laughed off all attempts to get him into treatment.
Sounds good in theory ... but seriously, the guy hasn't had a hit in a while so who's gonna really notice?
Justin Bieber's DUI arrest has NOT cost him the support of a major sponsor ... TMZ has learned Adidas is standing by him -- for now.
The athletic shoe company tells TMZ, "Nothing is changing in our relationship with Mr. Bieber at this time" ... which sounds like they're leaving that door open.
Bieber signed a big endorsement deal with Adidas back in 2012 -- he and Selena Gomez are the celebrity faces for the company's NEO line.
The Biebs earned about $58 million last year ... a good chunk of that from deals he made to hawk sneakers, headphones, nail polish, makeup, a prepaid credit card and the acne cream, Proactiv -- which pays him about $3 mil.
None of those companies -- as far as we can tell -- have made any move to ax Bieber.
We're awfully curious about what the Proactiv people are thinkin' right now.