Snails make good food for some fish. I move snails into a tank with clown loaches. They do not eradicate the snails in the tank but they keep them under control. Softer shelled snails can be crushed and fed.
You could try giving them to a local LFS or fellow hobbyist.
In general, do not throw animals directly in the trash. If desired to terminate the snails, put them in a bag in the freezer. |