10 Ways to Keep Rats Out of the Garden

When you have devoted countless hours to meticulously care for your garden, the last thing you want to worry about is a rodent infestation that destroys it all. Pest expert Michael from Richland Pest & Bee Control lists 10 ways you can tackle rats in the garden.

Rat in the garden.

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Your garden is your pride and joy, and you put a lot of time and effort into making it flourish. So the last thing you want to deal with is rats in the garden.

As a gardener, rodents are one of your biggest nightmares. They eat your crops, leave droppings everywhere, spread disease, and hide in the most inconspicuous places. Not only that, but they multiply insanely fast.

In fact, a rodent only has a three-week gestation period. It can birth up to 14 babies per litter, and a female can have up to 10 separate litters each year. And that’s just one rodent. So if you notice any rodents in your garden, you need to act swiftly to eliminate them.

You can’t use a pest control option that will harm your plants, and you don’t want to use one that will harm the environment. And if you’re a pet owner, you want something safe around your animals.

Luckily, there are many natural ways to both kill and deter rats in the garden so you can keep your crops and flowers growing beautifully all season long.

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Skip The Mulch

Overhead image of bark and wood chip mulch covering a garden bed.
Although mulch is beneficial for your plants, it also provides a great home for rats.

Mulching is amazing for adding organic nutrients to the soil and for weed control. But if you have a problem with rats in the garden, mulch can become an issue. It seems to draw them in, begging them to make a nest and get comfortable.

If you must mulch, opt for the wood-chip variety, since they shouldn’t be able to bury themselves underneath it.

Get A Cat

Orange and white cat catches a rat outdoors.
Let your beloved pets do the work for you.

Cats love to hunt mice (that’s not a secret). If you want to get rid of mice without having to lift a finger, get an outdoor cat to take care of them!

The great thing about cats is that they can fend for themselves. As long as you make sure the cat has food, water, and shelter available (and that it’s spayed or neutered), then you’re set.

Plant Mint

Close up of green, fragrant leaves of the mint plant used to repel rats.
The strong scent of mint repels rats.

The smell of mint is a natural deterrent for rodents, making it a great addition to any garden with a rat problem. Keep a few pots around the perimeter of your garden and inside the greenhouse rather than planting in the ground to control spread.

If you don’t want another plant to tend to, you can also scatter dried mint around the openings of your greenhouse. Alternately, soak some cotton balls in peppermint oil and let them do the job. Just make sure to replace them every couple of weeks.

Put Up Solar-Powered Repellers

A red Solar-Powered rodent repeller on soil protecting plants in the background from rats.
These devices use ultrasonic frequencies to deter rodents.

By using ultrasonic frequencies, these little gadgets utilize sound and vibrations to scare rats in the garden and keep them away. Since they’re solar-powered, they are still environmentally friendly, and they should keep the rodents at bay.

One unit covers about 6,000 square feet, so you may need a few of them (depending on how large your garden is). As the frequencies are geared towards rodents specifically, the sounds will not be noticeable by you, your children, or your pets.

Create A Border Of Herbs

Long blades of allium plants in the vegetable garden.
Use pungent plants to keep rats out.

In addition to mint, most rats and mice are put off by strong herbal scents, such as basil, echinacea, garlic, and thyme. To keep away the rodents, plant a border of these herbs around the outside of your garden. Once the rodents smell them, they will think your garden has nothing to offer and they’ll turn away.

Use Humane Mouse Traps

Small rat caught in a metal spring cage.
Choose the right trap to avoid mishaps.

The traditional snap traps work, but they are not always effective. And when they are, it is not a pretty sight. But, there are several mouse traps out there that use other more effective methods.

When the mouse is lured into the trap by the bait, a latex ring is sprung around the rodent’s neck to suffocate it. This type of trap makes cleaning the mice up easier, and it has a very high success rate.

Store Pet Food Securely

A silver metal dog bowl inside a large white bucket storing dog food pellets.
Keep pet food sealed and out of reach.

Another huge attraction for mice and rats in the garden is pet food and chicken feed. Make sure you place these edible attractions where rodents cannot access them easily, and limit how much you put out at a time.

It’s a good idea to use an airtight storage container to store your pet food. Not only does it keep the food fresh, but it locks all the food aromas inside.

Build A Sturdy Fence

A wooden fence surrounding the perimeter of a home with a planter and shrubs built into the bottom.
Reinforce areas where rats may sneak in.

If you don’t have a fence already, build one. If you do have a fence around your garden, then you need to make it more secure. Often, rodents will crawl under the garden gate, so pay extra attention to this area and reinforce it.

Rodents also burrow under fences. You can stop them with some quarter-inch grid hardware cloth. Dig a trench along your fence, going six inches down and about six inches out from the fence. Staple the hardware cloth to the base of your fence. Then, bring it down below the soil surface and cover it. This creates an underground barrier.

Sprinkle Instant Potatoes

A white bowl full of instant potatoes surrounded by freshly harvested potato spuds.
Instant potatoes are effective at eliminating rats in the garden.

Instant potatoes are cheap, and they are surprisingly effective at eliminating rats in the garden. Simply sprinkle a few tablespoons of the powder wherever you suspect an infestation. The rodents will eat them, and after they do, the flakes will expand in their stomachs.

Since their stomachs are so small, the mice won’t stand a chance, and they will die before the potatoes can be digested. However, if you have other pets, be careful that they don’t eat your potato flakes.

Place Onions Around The Garden

Red, white and yellow onions in a large pile pictured from above.
The strong smell of onions keeps rats away.

Onions are pungent, and rodents hate them. Plus, you don’t even have to grow them for this trick to work. All you have to do is place an onion where you suspect the mice are entering, and they will take one smell and run the other way.

You should put a new onion out every couple of days or it will rot. And again, keep the onion away from any pets, as onions are poisonous to dogs.

Alternately, consider growing onions, leeks, and garlic around the exterior of your garden beds. That tends to repel a number of pests, not just rodents.


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