The old theory 'you can't teach an old dog new tricks' will be put to the test in the next few weeks. 

Due to the legalization of Marijuana in the state of Ohio, law enforcement agencies across the Buckeye State are scrambling to figure out what do with their K9s that are imprinted on the now-legal drug.

"I think that dogs are going to have to be decommissioned or retired and police departments are going to have to think about getting new dogs that are imprinted on your hard illicit drugs.", said Marc Peluso, co-owner of Enforcer Working Dogs.

Those illicit drugs include cocaine, methamphetamine, heroin, cocaine--as well as the derivatives of those drugs

According to an area attorney--depending on how Marijuana laws play out--traffic stops will be much more complicated.

"Courts in other states have determined that the mere smell of marijuana or hitting on marijuana where it's legalized is not probable cause to initiate a further search during a traffic stop.", said Matt Mangino, Pennsylvania attorney.  For years, probable cause searches related to Marijuana have resulted in large drug seizures.

In the valley, many agencies stopped imprinting, or training dogs on Marijuana years ago in anticipation of Marijuana passing but some do remain.

T.J. Dobbins with Alpha Pack K9 says not much is changing for newer K9s.

"The only K9's you'll see imprinted on Marijuana are school resource dogs and jail dogs where those substances are always going to be prohibited.", Dobbins added.  He also tells 21 News that Marijuana is put out during the imprinting the process to proof the dog off of it, ensuring the dog doesn't link it to the target odors.

Jerry Greene at the Mahoning County Sheriff's office says they have two dogs imprinted on Marijuana and are going to seek opinions on what to do next. Liberty has one K9 they're hoping to proof off of the drug, a cheaper option than purchasing a new dog.

"Those police departments have already paid $15,000-$20,000 for a dog that is imprinted on Marijuana.", said Peluso.  The longtime dog trainer says departments have the choice on what the dogs they purchase are imprinted on.