- Fill bucket of water
- Place flares in bucket of water
- Allow to soak for a few hours
- Remove soaked flares
- Place in trash
- Dispose in landfill
Or you can take them to your local CG station. You also could call the FD in your area and ask them to take them off your hands. Sometimes they will dispose of them in their Fire Training Exercises.
If you liked my advice/response, give me some rep points. If you didn't......well what do you expect, it was free.