If you're a gardener, you know that slugs and snails can be a real pain. These slimy creatures can wreak havoc on your plants, and it can be difficult to get rid of them. Some experts swear by using coffee grounds to deter these pests.

Coffee grounds contain caffeine, which is toxic to slugs and snails. When these creatures ingest caffeine, it can kill them. So, using ground coffee as a barrier around your plants may help to keep them safe from these critters.

Of course, you'll want to use Organic Coffee if you're going to try this method. You don't want to harm the environment more than you have to. And, it's always a good idea to test this method out on a small area first to see if it works for you.

If you're looking for an organic and environmentally-friendly way to get rid of slugs and snails, coffee grounds may be worth a try.

slugs and coffee grounds

Why Don't Slugs Like Coffee Grounds

A common question that gardeners have is why don't slugs like coffee grounds. The answer to this question is actually quite simple. Coffee grounds are acidic, and slugs are sensitive to acidity. In addition, coffee grounds are sharp and can cause injury to slugs.

coffee grounds contain a chemical called alkaloid, which is poisonous to slugs. When slugs ingest coffee grounds, they suffer from severe dehydration and eventually die.

For these reasons, slugs will avoid areas where coffee grounds have been sprinkled. While coffee grounds may not be the most effective way to keep slugs out of your garden, they can be a helpful tool in deterring these pests.

Snail Eating a Plant

Do Coffee Grounds Deter Snails

Coffee grounds are often used as a natural way to deter pests like slugs. But how effective are coffee grounds at deterring these slimy creatures?

Coffee grounds contain caffeine, which is toxic to snails. When these creatures ingest coffee grounds, they become dehydrated and eventually die. Additionally, the sharp edges of coffee grounds can deter snails from crawling over them.

Studies have shown that coffee grounds are an effective way to deter snails (and other pests). In one study, coffee grounds were found to reduce the number of snails by up to 50%. In another study, coffee has shown to reduce the number of slugs by up to 90%.

Overall, coffee grounds are a safe and effective way to deter snails and other pests. If you have a problem with these creatures in your garden, spread some coffee grounds around and see if it makes a difference.

How to Use Coffee to Deter Snails and Slugs

If you're looking for a way to deter snails from your garden, coffee may be the answer. While most gardeners focus on using chemicals to kill or repel pests, coffee is a natural, inexpensive alternative that can be just as effective. Here's a quick guide on how to use coffee to deter snails:

  • Brew a strong pot of coffee, using twice the amount of grounds you would normally use.
  • Let the coffee cool, then pour it into a spray bottle.
  • liberally spray plants and soil around your garden, taking care to target areas where snails are likely to congregate.

Repeat the process every few days, or as needed.

Is Coffee Gounds Harmful to Plants

Many coffee aficionados enjoy using coffee grounds in their garden, as they can provide a valuable source of nutrients for plants. However, it is important to be aware that coffee grounds can also be harmful to plants if they are not used correctly.

In particular, coffee grounds can increase the acidity of soil, which can damage plant roots and make it difficult for plants to absorb nutrients. As a result, it is important to use coffee grounds sparingly and to monitor the pH level of the soil to ensure that it remains within the ideal range for plant growth.

When used correctly, coffee grounds can be a helpful addition to any garden; when used incorrectly, they can do more harm than good.

Plant Eaten by Garden Pest

Other Ways to get Rid of Slugs and Snails

There are a number of other ways that you can get rid of slugs and snails in your garden. Some common methods include:

Handpicking: This method involves manually removing slugs and snails from your garden. This can be time-consuming, but it is an effective way to reduce the population of these pests.

Barriers: You can also create barriers around your plants to keep slugs and snails out. Common barrier materials include diatomaceous earth, sand, and grit.

Traps: There are a number of different traps that you can use to catch slugs and snails. Some common traps include beer traps and boards with sticky tape.

Predators: Another way to control slugs and snails is to introduce predators into your garden. Common predators include frogs, toads, and ducks.


Overall, coffee grounds can be a helpful tool in deterring slugs and snails. However, they should not be the only method used to keep these pests at bay.

In addition, coffee grounds can be harmful to plants if they are not used correctly. When using coffee grounds in your garden, it is important to monitor the pH level.

Author: Richard Smith

Partner at The Kent and Sussex Tea and Coffee Company

Richard Smith is a Tea expert, entrepreneur, and owner of The Kent and Sussex Tea and Coffee Company. Part of a family of renowned Tea planters dating back four generations, he was born in Calcutta (Kolkata), India, where he spent his childhood between Tea Estates in Assam and Darjeeling.

In the late 1970s, having accumulated years of knowledge in the industry, Mr Smith and his mother, Janet Smith, moved to Kent, South East England, to establish a Tea business in the village of Pluckley. Their early days of packing Tea Bags by hand from chests of 10,000 prompted the creation of the company’s flagship infusion known as Pluckley Tea. It remains our most popular product today.

Mr Smith, who studied economics at London Polytechnic, has since specialised in over 1,000 types of Loose Leaf Tea - in addition to around 70 varieties of Roast Coffee - from around the world. These are now available at The Kent and Sussex Tea and Coffee Company, where everything is still packed by hand and fresh to order, not only to honour tradition but to ensure the utmost quality and consistency.