Disposal
Expired or unwanted prescription medications may be dropped off at either of the following locations:

• Castle Rock Police Department (during regular business hours, Mon-Fri, 8 a.m.-5 p.m., excluding holidays)
  100 Perry St.
  Castle Rock, CO 80104
• Douglas County Sheriff's Highlands Ranch Substation
  9250 Zotos Dr.
  Highlands Ranch, CO 80129

Unacceptable disposals
The following items will not be accepted:

• Chemotherapy/Radioactive substances
• Illicit drugs
• Mercury (thermometers)
• Needles and sharps
• Oxygen containers
• Pressurized canisters