Also consider wind as a factor in snail growth. Wind causes snails to dry out, so you should situate your snailery in a sheltered location if possible.
Dig the fence in at least 20 cm to prevent snails from burrowing under and escaping. It only needs to be a few inches tall if there’s no roof. If there is a roof, you’ll need to build the pen at least as tall as the potential height of the largest plants in the enclosure.
Fine wire mesh is a good option for a roof. You can cover it with thin cloth for added protection. If you do add a roof, you will need a way to access your snails. If you are using wire mesh, attach the roof with twists of wire so that you can loosen them and get into the pen whenever you need to.
very sandy soil (it doesn’t hold water well) heavy, clay-like soil highly acidic soil (it can damage their shells)
You might also consider planting small trees outside of the enclosure as well. This will help protect them from wind, sun, and rain. [6] X Research source
Wooden boxes work well. Be sure that they are made of decay and termite resistant material. Discarded oil drums are a cheap and workable option as well. Glass or plastic containers work too. If you’re working with just a few snails, a plastic Tupperware container would work. For a few more, consider an aquarium.
You should also place the snailery away from very direct, hot sunlight so that they can easily stay moist. Don’t put them under a vent, because this can cause them to dry out.
Don’t use soil directly from your garden, because it could contain other organisms as well.
If any food goes uneaten and starts to rot, remove it from the container. Good fruits for snails include mangos, bananas, pears, eggplant, figs, tomatoes, and cucumbers. Snails need protein, which they can get from sweet potatoes and plantains. Household leftovers such as rice and beans are fine, but be sure that they do not contain salt. [13] X Research source
Be careful of moving baby snails. Adult snail shells are hard enough that you can pick them up, but try to move baby snails by nudging them onto a stiff piece of paper and transferring them gently.