best way to recycle epson ink cartridges?

[Katnina]

Hi everyone!  I have 13 empty Epson ink cartridges (#88 & #69).  I googled & saw that Staples & Office Depot will buy them back for $2.00 store credit (although for office depot, they only give you credit if you spend that much there yearly..which i don't).  Thinking of doing the Staples one since there is one near my apartment & I can use the store credit on office supplies for my mystery shopping side biz/mailing supplies for selling crap on ebay.
Anyone have any other, better suggestions?
Thanks!

[kkbmustang]

I take mine to Staples.

[Will]

Even if I thought Staples deserved another dime from me ever (which I don't), I'd still say stop buying new ink cartridges and take them into Costco or some other place that can refill them.