What is Office Depots current policy on recycled print cartridges? -

I want to recycle empty hp ink cartridges. I believe Office Depot allows to turn in a number of them daily. I m interested in specifics as to number allowed per day, and what you receive, coupon? discount?...... A reference to a www would be appreciated most. Thanks.

You can take 3 (3.00 each) empty cardridges a day, they give you 9.00 off of your order. I usually just buy a new ink cartridge. I know they take back HP genuine and refurbished, but I m not sure of other brands.