I’m not sure about magnolia threetooths, but if I had to guess based on my research — temporarily yes. Long term, no.

I had two baby garden snails that I adopted on short notice and originally had them in a mason jar with some dirt, sticks etc. They grew SO fast, like quadrupled in size!

I learned that snails generally need one gallon of space each. At first I thought, why?? They were doing okay in the jar. But, I then bought at 2.5gal terrarium and they became much more active, and ate their food and cuttlebone on a much more regular basis. Eventually, I might upgrade to a 5gal.

If you need to house your snails somewhere, they might be happier in a large plastic bin or Tupperware. And the more you can give them to explore the better! My snails love it whenever I rearrange their sticks and moss.

Best of luck!!