Metaldehyde is a highly efficient, low toxicity, safe and environmentally friendly selective snail killer,

 which will dilute a large amount of acetylcholinesterase in its body after contact,

 destroy the special mucus in the body of the snail, cause rapid dehydration and rapid neural paralysis,

 and death by poisoning in a short period of time.

It has luring effect, attracting snails and slugs to crawl out and feed.