Home Security Camera's recommendation

Start posting the pics of the users cars buying on a community forum. Who owns the property? If its a rental, you can go after the owner for illicit activity.
Drug dealing decreases the value of a rental property and may attract other illicit activities and crime to the area.

This liability exists even in the event that the landlord does not have actual knowledge of the illicit activities but the appointed property manager does; landlords are responsible for the actions and knowledge of their designated agents.

In the event that the issue persists and the property owner fails to do everything that can reasonably be expected to prevent the illegal use of the property, the federal government has the option of initiating a civil asset forfeiture complaint to seize and/or forfeit the property to the government.

Call the Feds or your city council member or congressional member or state rep. Bark high enough up the tree and someone will have to address this, you can even call the city newspaper. Email them all the same complaint (CC all of them) so when **** goes down there (shooting, arson cough ) there will be a paper trail that you can show everyone that this was brought to everyones attention.