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Make a beer trap to capture the snails. Pick up and remove the snails if you have the time to do so. Spray the snails with cold coffee to kill them. Apply a homemade garlic spray to repel and possibly kill the snails. Use can iron phosphate bait to kill the snails. Use a molluscicide containing ferric sodium EDTA to kill snails quickly. Get a pet chicken that will eat the snails. Encourage natural snail predators to live in your garden or yard.
Pour beer into a small container, such as an old tuna fish can. Bury the container in you garden or near the place where you saw the snails, but leave at least 1 inch (2.5cm) above the soil. The smell of the beer will attract the snails, which will drown in the container. Adding yeast will make the traps more enticing to the snails. You may need to put out multiple traps, as they will only be effective for snails that are close by. Other great options for your beer container include a plastic cup, yogurt cup, bowl, or pie dish. Don't bury your beer trap at soil level, as other beneficial bugs might accidentally die in it. Snails are most active in the early morning or at night, so this is the best time to go snail-picking. Put the snails in a bucket or container to move elsewhere. You might also decide to kill the snails. To make the process quicker, you can put an overturned pot or bowl in your garden or near the area where you've seen the snails. The snails will likely hide under the pot, which makes it easy for you to find them. The caffeine in coffee negatively affects snails, so they'll die if you spray them with coffee. However, you have to drench the snail for it to die, so make sure you spray it a lot. Make your own coffee spray by brewing a pot of coffee, then letting it cool. Put the coffee in a spray bottle to use around your garden or home. Spritz the garlic spray around your garden, yard, and home, as needed. If you spot a snail, you can drench it with the garlic spray. It may kill some snails, and it will also deter them away. To make your garlic spray, soak 3 crushed garlic cloves in 1 tablespoon (15mL) of vegetable oil overnight. Then, strain the liquid into 1 litre (4.2c) of water. Pour the mixture into a spray bottle. Add 1 teaspoon (4.9mL) of liquid soap to the solution, then shake the bottle before using. Iron phosphate is a molluscicide, which means it kills snails and slugs. Simply place the trap in your garden or near the location where you've noticed snails, and they'll be attracted to the bait on it. After they come into contact with the iron phosphate, the snails will die. You an find an iron phosphate bait at a local gardening store or online. This bait will make the snails stop eating, but they may take as long as a week to die. Iron phosphate is the safest bait to use because it's non-toxic to humans and pets. Distribute the product in the late afternoon or early evening so it will be fresh when the snails become active at night. Sprinkle a light layer of the molluscicide around the area where you've seen the snails. The snails will be attracted to the bait mixed into the molluscicide. After they ingest it, they will die within 3 days. This product is generally safe for use around your yard, but keep your children and pets away from the area. The molluscicide should be in a thin layer. Don't put out clumps, as other animals could eat it and get sick or die. Chickens enjoy munching on snails, so allowing one to roam around your yard or garden is a great natural solution for snail control. The chicken will find the snails for you, so you don't have to do any of the snail removal yourself. Ducks may also eat snails, but they prefer slugs over snails. Make sure your local laws and ordinances allow you to have a chicken in your yard. These include frogs, toads, turtles, birds, possums, and snakes. Which predator you choose will depend on your environment, so talk to your local agricultural extension office or gardening club for recommendations for biological controls that will work in your area. They'll recommend plants or shrubs to grow, as well as natural habitats you can build, like a rock garden. You might also search online for the best ways of encouraging natural predators in your area.