K-9's are trained to detect:
Marijuana, Cocaine, Amphetamines, heroin. That's it. No LSD or Shrooms. They should not alert on prescription meds but often do because kops train with marijuana in empty prescription pill bottles. During training, the K-9 equates the odor of prescription pill bottles to his reward. If the trainer does not train the dog off the bottles, the K-9 will continue to wrongly alert on them.
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