Can snails be good in the vivarium?

I think most snails will eat living plants also. (could be wrong though)

You may want to try some isopods (pill bugs, rolly pollies, ect.)

Snails are generally not a good thing to have in a viv. There have been some to report snails eating the eggs. So to add a bug for "clean-up" add earthworms or as previously mentioned pill bugs.

Mike

Malaysian trumpet snail these are aquatic snails that live in gravel they don't eat plants. Not sure how they would do in a vivarium. Very hardy and one of the smallest snails I have seen with a shell. Very productive.

Hey Steven - Who would stock this type of snail?

The land type are bad! They will eat eggs. I have seen it or at least I have killed them on clutches and they are really hard to get rid of once established in the enclosure. They eat delicate plants too.
Ed

I'd use pill bugs and/or earthworms. Snails eat eggs and carry parasites and diseases.

This is true about the parasite-snail relationship. Snails serve as the intermediate host for a HUGE variety of parasites, many of which will infect a frog.

Hello again;
I guess its garlic time for those buggers. No snails for me. thanks for all your help.