when property is seized during a warrentless search, what procedures must law enforcement follow to protect the integrity of the evidence? LE came to my house on an "anonymous report" re: alleged meth lab activities. During a 'walk through search' of my domicile a nearly empty cannister of TranQuility bath salts was taken by the officer who indicated he was sending it to lab due to recently being illegal in PA. I was not issued a receipt for my property nor was it placed into a sealed evidence bag, he merely 'chucked' it into his coat pocket. Now, three and half months later I am being charged with possession under the new federal ban on synthetic cathinones (MDPV specifically) even though the cannister was empty except for dusty residue since I had had it for over three months and never bothered to throw out the container. I believe I am being harassed for no other reason than an inflated, power tripping egomaniacs' agenda.