Walgreens Pharmacy

The Department of Justice website states that this pharmacy is a Controlled Substance Public Disposal Drop-Off Site. I called to confirm that before I drove 44 miles round-trip to utilize that service. I waited on hold 15 minutes, and the young man did confirm they are a drop-off site, but when I asked if there were any special instructions for packaging them, or any restrictions, he said "Why don't you just ask me what you really want to know? That would be more efficient." Excuse me??? What didn't you understand?