"marijuana dowsing rods" are effectively the drug dogs often used to get "probable cause" to search someone's car without a warrant or any actual probable cause

"marijuana dowsing rods" are effectively the drug dogs often used to get "probable cause" to search someone's car without a warrant or any actual probable cause. They're effectively trained to give a positive return on whatever car the police point them at, to get around whichever amendment it is that law-enforcement in the US basically like to use to wipe their ass on.