How to dispose off the old /failed cd/dvd disks

i have more than a 70 failed/not used anymore disks.
how best to getrid off them?
just throwing away is not good because of the data contents and littering neibourhood.
any suggestions?


I use a metal hand shear to cut from edge to center hole - that will destroy sufficiently to keep anyone from reading/using data on the disc - disposal at electronic recycle center-eh