How can I effectively manage and control the presence of small snails in my garden?

To effectively manage small snails in your garden, you can try methods like handpicking them, creating barriers with copper tape or crushed eggshells, using natural predators like ducks or nematodes, and applying organic repellents like diatomaceous earth or garlic spray. Regularly inspecting your garden and removing any hiding spots for snails can also help control their presence.