How to Get Rid of Slugs

• You can create the perfect slug trap by laying boards or pieces of cardboard on the bare soil around your plantings. Each morning, turn the boards over and scrape the hiding garden slugs into large plastic containers. Cover and place in freezer for three hours. When frozen stiff, dump them on your compost pile.
• Place shallow dishes of beer around the garden to lure the slugs to a drunken death. Or mix water with molasses, cornmeal, flour, and baking yeast to replace the beer. These are both great slug baits that can help control your garden slug population.
  • Some slugs are a bit beer-resistant and might crawl out of the dish. If you find this happening, try creating a beer trap that they can’t escape from: Cut the spout end off a plastic beverage bottle just where it reaches the fattest diameter. Now, turn the pour-spout around so that it’s pointing inside the bottle and fasten it with staples or duct tape. Pour a little beer into the bottle (add extra yeast, if desired) and lay it on its side in the garden. 
• If necessary, get out and handpick the little rascals—a task best undertaken in the evening twilight or in the early light of dawn, before they have sought shelter from the heat of the day.
• If you need a slug repellent to keep slugs away from tender plants, circle them with wood ashes (which are also a good source of potassium for your plants), diatomaceous earth, copper sheeting, coffee grounds, pine needles, coarse snad, or crushed eggshells. These rough mulches rip up a slug’s tender underside.

Photo Credits: GrowVeg.com. Prevent slug damage like this with the above tips for getting rid of slugs.

• Alcohol kills these pests by acting as a surfactant, or wetting agent, that can penetrate an insect’s waxy coat of armor and kill on contact with the body. Isopropanol (rubbing alcohol) works fine and is easy to find, but be sure it doesn’t have additives. Ethanol (grain alcohol) seems to work best. Alcohol usually comes in 70 percent strength in stores (or 95 percent strength purchased commercially). To make an insecticidal spray, mix equal parts 70 percent alcohol and water (or, if using 95 percent alcohol, mix 1 part alcohol to 1 ½ parts water).
• A spray of cold coffee can control small slugs, but it must completely drench them to be effective.
• Some plants have been shown to do well despite being around slugs. If you tend to have slugs and are having trouble getting rid of them, try planting astilbe, phlox, or mint to reduce damage.
• Check out this video about controlling slugs and snails in the garden and this blog with more tips on how to naturally get rid of slugs.
• Try this old-fashioned advice from The 1963 Old Farmer’s Almanac: A mulch of oak leaves is useful against slugs. To control slugs, our grandparents strewed leaves of lettuce, spinach, cabbage, or slices of raw potato in the garden. The night feeders collected beneath these materials, and the next morning they were gathered and eliminated. Frogs and toads are good consumers of slugs. Old timers, living by their wits, learned to make use of simple materials for insect control. They found that slugs do not like alkaline ground. Slaked lime, wood ashes, slag, sand, and cinders were useful against slugs.

How to Prevent Slugs

• It is helpful to rake your garden in early spring in order to clean up some of the moist debris that slugs love, as well as to rake away any slug eggs. Large wood chips also provide hiding areas for slugs, so try not to use them.

Photo Credit: GrowVeg.com. Prevent slugs in your garden by getting rid of slug eggs.

• Only water your garden when necessary so as to minimize the damp places in which slugs congregate.
• Slugs have many natural predators. If you have chickens or ducks, they will help by eating slugs and their eggs. Also, be sure to encourage the populations of snakes, turtles, frogs, toads,and ground beetles in your garden. Firefly larvae are also natural predators, so find out how to attract fireflies to your garden. The same goes for songbirds, so check out our tips on creating a bird-friendly habitat. 
• Slugs experience a small shock when exposed to copper, which will make them turn back. Try making a perimeter around your plants with copper tape.
• Companion planting is a great way to prevent pests. In order to keep slugs away from more valuable plants, place plants that slugs love near your valuables as a trap, and then destroy the infested plants. Good traps for slugs include chervil, marigold, and thyme.