My earliest 'farming' experience, aged about 7,involved keeping snails in a wooden box as pets. Feeding them on porridge oat flakes. Had over 100, of various species, at one time. They were often escaping as the lid was insecure. Much time spent trying to recapture them, evolving into putting Airfix paint spots on the shells to be able to distinguish 'my' snails. It was from this that I discovered how far they can travel, several hundred yards, in their own good time.