Answer: Wheat germ probably won't have any effect on snails, although if you used flaked wheat germ and it stayed dry, snails might not like crawling through it. But it won't get rid of snails. A better approach would be to try to deter them by putting a barrier around your plants. Copper strips are expensive, but effective. You can also use crushed egg shells or diatomaceous earth around the stems of your plants. If you can sprinkle dry soil around the stems, that will deter them, too. Another way to lower the population is to go out at night with a flashlight and harvest any snails you see. If you eliminate hiding places in your garden, they may go elsewhere to feast. Remove any plant debris that might provide moisture and shade for the critters. You can set up a trap by inverting a terra-cotta flower pot in your garden, propping it up with a stone so the snails will crawl under and into it. In the morning, remove the collection of snails that you find hiding in the trap.
Hope the above helps you control the snails in your garden!
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