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How to Get Rid of Gastropods: Winning the War on Slugs and Snails

Gastropods, including slugs and snails, may seem like harmless creatures, but they can wreak havoc in your garden. Notorious for munching on your precious plants and vegetables, they can leave behind a trail of destruction. But fear not, dear gardener! This comprehensive guide will arm you with the knowledge and tactics needed to send these slimy pests packing.

Know Your Enemy: Understanding Gastropods

Gastropods are a class of mollusks that include snails and slugs. They have a muscular foot used for locomotion, and most species are equipped with a shell, although slugs have either a very small, internal shell or none at all. Gastropods are known for their slimy secretions, which help them move smoothly and protect their bodies from dehydration and predators.

Why Are They in Your Garden?

Gastropods are attracted to gardens because they offer a smorgasbord of delicious plants and vegetables. Slugs and snails are particularly fond of tender shoots, leaves, and fruits, leaving their slimy trails and holes as evidence of their feasting. Additionally, gardens often provide ideal hiding spots, such as damp and dark areas under rocks, logs, or plant debris.

Prevention: Keeping Gastropods Out of Your Garden

An ounce of prevention is worth a pound of cure. By making your garden less attractive to gastropods and implementing barriers, you can reduce the likelihood of them taking up residence.

Choose Less Appetizing Plants

Some plants are less appealing to gastropods, so consider incorporating them into your garden. Examples include:

  • Geraniums
  • Fuchsias
  • Lavender
  • Rosemary
  • Mint

Keep Your Garden Tidy

Gastropods thrive in damp, dark environments. Remove debris, such as dead leaves, and avoid overwatering your garden. Additionally, prune low-hanging branches and leaves to increase airflow and reduce humidity.

Create Barriers

Physical barriers can help keep gastropods at bay. Here are some effective methods:

  • Copper tape: Gastropods are deterred by the electrical charge generated when they come into contact with copper. Apply copper tape around the base of pots, raised beds, or other areas you want to protect.
  • Crushed eggshells or diatomaceous earth: Spread a layer of crushed eggshells or diatomaceous earth around the base of your plants. The sharp edges deter gastropods by damaging their soft bodies.
  • Sandpaper or gritty surfaces: Create a barrier using sandpaper or another abrasive material around the base of plants or pots.

Natural Remedies: Using Mother Nature’s Arsenal

Natural remedies are an eco-friendly and humane way to control gastropods. Here are some tried and true options:


Nematodes are microscopic worms that can be purchased in a concentrated form. Mix them with water and apply to your garden soil. They’ll seek out gastropods and kill them by releasing bacteria that are toxic to slugs and snails but harmless to other creatures.


Encourage natural predators to visit your garden by creating habitats for them. Some gastropod-loving predators include:

  • Birds: Install bird feeders and bird baths to attract birds, such as thrushes, blackbirds, and robins.
  • Hedgehogs: Create hedgehog-friendly environments by providing shelter, such as log piles, and avoiding the use of slug pellets, which are toxic to hedgehogs.
  • Frogs and toads: Build a small pond or provide a damp, shady area to encourage frogs and toads to take up residence in your garden. They’ll happily munch on slugs and snails.

Beer Traps

Gastropods are attracted to the scent of beer. Bury a shallow container in your garden, leaving the rim about an inch above the soil, and fill it with beer. Slugs and snails will be lured in and drown. Replace the beer every few days and dispose of the drowned pests.

Coffee Grounds

Sprinkle used coffee grounds around your plants. The caffeine in coffee grounds can be toxic to gastropods, and they also dislike the abrasive texture. As a bonus, coffee grounds can improve soil fertility.

Chemical Warfare: When You Need to Bring out the Big Guns

If natural remedies aren’t cutting it, consider using chemical controls. Always read and follow label instructions, and choose eco-friendly options when possible.

Iron Phosphate

Iron phosphate-based slug and snail pellets are a safer alternative to traditional metaldehyde slug pellets, which can be harmful to pets and wildlife. Scatter the pellets around your garden, and they’ll break down into nutrients for your plants after killing the gastropods.

Ammonia Spray

Mix a solution of equal parts ammonia and water, and spray it directly onto slugs and snails. The ammonia will kill them without harming your plants. However, use this method sparingly and only as a last resort, as ammonia can be harmful to other organisms in your garden.

The Nuclear Option: Removing Gastropods by Hand

If all else fails, you can always resort to hand-picking gastropods from your garden. It may not be the most glamorous job, but it can be very effective. Here are some tips for a successful gastropod hunt:

  • Go out at night or on damp, overcast days when gastropods are most active.
  • Bring a flashlight and a container filled with soapy water or salt water.
  • Carefully search your plants, pots, and hiding spots for slugs and snails.
  • When you find one, simply pick it up (using gloves if you prefer) and drop it into the container. The soapy or salt water will kill the gastropod.

After your gastropod hunt, be sure to dispose of the dead pests far away from your garden, or bury them in your compost pile to help break them down.

Celebrate Your Victory!

With these strategies in your arsenal, you’ll be well-equipped to tackle any gastropod invasion. Remember that persistence is key, and a combination of prevention, natural remedies, and targeted interventions will lead to a slug and snail-free garden. Now, go forth and reclaim your garden from these slimy invaders.

Frequently Asked Questions About Gastropods

What’s the difference between a slug and a snail?

The primary difference between slugs and snails is the presence of a shell. Snails have a visible external shell that they can retreat into for protection, whereas slugs either have a small, internal shell or none at all. Both are classified as gastropods, and they share similar slimy secretions and feeding habits, which often leads them to your garden.

Are gastropods harmful to humans?

A: While gastropods themselves are not harmful to humans, they can potentially spread diseases and parasites. For example, some slugs and snails can carry a parasite called the rat lungworm, which can cause serious health issues in humans if ingested. To avoid any risks, always wash your hands after handling gastropods and thoroughly clean any fruits or vegetables they may have come into contact with.

I’ve heard that salt can be used to kill slugs and snails. Is this true, and is it a good method?

Salt can kill slugs and snails by drawing out moisture from their bodies, causing them to dehydrate and die. While this method is effective, it can also be quite cruel and may cause harm to the soil and other garden inhabitants. Using salt in your garden can negatively impact soil structure, damage plant roots, and harm beneficial organisms. Opt for more eco-friendly and humane methods mentioned in the article above.

My garden is overrun with gastropods! Can I eat them to get rid of them?

Some gastropods, like certain species of snails, are indeed edible and considered a delicacy in various cuisines. However, it’s essential to exercise caution if you’re considering consuming gastropods from your garden. Wild gastropods can carry parasites and pathogens that could be harmful to humans if not properly cooked. Additionally, be aware of any chemicals or pesticides used in your garden, as these could also make gastropods unsafe to eat. If you’re interested in trying gastropods as a culinary treat, it’s best to stick with commercially available options from reputable sources.

About Author

Hannah Anderson is a passionate garden enthusiast with over a decade of experience. She has been sharing her knowledge and expertise on this website and her articles and tips have helped countless individuals create beautiful and thriving gardens. Whether you’re a seasoned green thumb or just starting out, Hannah’s practical advice and creative ideas will inspire and guide you on your gardening journey.

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