Residents can drop off clean, flat corrugated cardboard at any of the following locations during normal business hours:

• Clay Hill Environmental Convenience Center
  
  5869 County Road 218, Middleburg, FL
  Thursday–Saturday, 7:30 a.m.–5:30 p.m.
• Doctor's Inlet Environmental Convenience Center
  
  288 Sleepy Hollow Road, Middleburg, FL
  Thursday–Saturday, 7:30 a.m.–5:30 p.m.
• Keystone Heights Environmental Convenience Center
  
  5505 County Road 214, Keystone Heights, FL
  Thursday–Saturday, 7:30 a.m.–5:30 p.m.
• Long Bay Environmental Convenience Center
  
  1589 Long Bay Road, Middleburg, FL
  Thursday–Saturday, 7:30 a.m.–5:30 p.m.
• Rosemary Hill Solid Waste Management Facility
  
  3545 Rosemary Hill Road, Green Cove Springs, FL
  Monday–Saturday, 7:30 a.m.–5:30 p.m.