Because razor blades remain quite sharp even when too dull for shaving, disposal requires some care. (When I was growing up, all medicine cabinets had slots in the rear for disposal of razor blades. You dont see those much anymore.) Dispensers that hold 5-10 blades have a used-blade compartment on the bottom for safe disposal.
If you buy blades in bulk, without a dispenser, use a special receptacle for used blades rather than simply throwing the blades into the trashrazor blades can all too readily cut through plastic trash bags and into the hands lifting the bag. Proper disposal is especially important if the household includes small children, but should be done in any case. Disposal of sharps is always worth doing with care.
You can fairly easily find commercially made disposal safes for razors, thanks to Mr. Google. This one, by Stanley, holds one gallons worth of bladestoo large for home use. The PHC Blade Bank holds 1000 blades, a more reasonable size. But its also easy to take a plastic bottle with a smallish top (too small for a razor blade) and cut a slit across the shoulder of the bottle. Slide your discarded razors into the slit, and then tape over the slit or glue it shut when its time to discard the bottle full of used blades.
Tye said:What I do (and this may not be for everyone) is save the used blades until Halloween and then slip them into apples and hand them out as treats.