Iodized salt.
kill them
NO!
Yes, based on my own experience, seven dust kills earthworms.2nd Answerer says: I concur.
I heard recently that it does a job on slugs, and a slug is just a snail without a home.
Table, Kosher, and Sea does. Epsom does not. potting soil kills earthworms
There are many chemicals that will kill freshwater snails but they will also kill fish and some will kill plants too. The best way I have found to remove snails is to have a few Clown loaches (Botia macracantha) or a couple of freshwater Puffer fish to kill and eat them.
Yes, chlorinated water kills earthworms. The worms in question must breathe through their outer layers. The "skin" needs to be kept moist, but waterlogged, with the consequence that too much of any water -- not just chlorinated -- will kill earthworms.
no but roots can be damageable to them but they do not kill earthworms
Most likely your lab finds them attracted. The best thing to do would be to spread some snail/slug killing chemicals around the yard. This will kill the snails and slugs, preventing your dog from eating them.
Potting mix does not kill earthworms.
Yes, they will eat the tomato fruit but not the plant.
yes it does kill snails