Dog Repellent vs Training To Keep Dogs Out Of Your Garden

How To Keep Dogs Out Of Garden Areas - Dog Repellents Vs Training

Dog repellent comes in many forms, but they are all physical methods of discouraging your dog to go near a particular thing or into an unwanted area. A dog repellent can be sound, odor, water or even chemical based. All these methods can work on some dogs, but they are not universally effective. They are also aversive, punishing and upsetting to your dog. That’s why they won’t go near it! Most modern trainers believe that using deterrents in animal management should always be a last resort as side effects can be unwanted and unpredictable


One alternative to the dog repellent is to train your dog to stay in one part of your yard, or away from another. While training is generally a good idea, when it comes to relaxing and enjoying your garden, it is often better to avoid trouble than to treat it as a training issue. Dog barriers are often seen as the most effective and ethical solution, but they aren’t always practical.

Why Keep Dogs out of Garden?

There is nothing puppies enjoy more than a bit of ‘freestyle’ gardening. Most young Labradors think that a rose bush looks a lot better when it has been uprooted and dragged around the garden a few times. And of course, digging up your prize carrots is always a good way for any Labrador puppy to start the day. In fact, digging of any kind is a source of joy to many dogs, not just puppies. This can come as quite a shock to a first-time Labrador owner.

Are All Dogs Destructive in Gardens?

Some puppies are positively angelic outdoors. Which makes the owners of the naughty ones feel as though they are doing something wrong. I can reassure you that for the most part they are not doing anything wrong at all. Destructive behavior in puppies left unsupervised outdoors is so common as to be considered normal.

In the photo above, you will find my own puppy, Rachael, relaxing in the mess she has made on our patio, after being left to her own devices for rather too long. Your dog’s excavating abilities may rival those of a backhoe, but they don’t indicate an unstable temperament or some kind of mental disability. You simply have a normal Labrador puppy.

How to Keep Dogs out of the Garden

So, your dog is normal. That’s the good news. But it doesn’t change the fact that you don’t want a dog, any dog, digging in your flower beds or rooting around in your vegetable patch. Naturally, as the owner of a young tearaway, you are looking for a quick and effective dog deterrent solution. A command or training method that will keep dogs out of garden areas, off flowerbeds and put a stop to the destruction and naughtiness.

Most importantly, you want to be able to let the dog into the yard without watching him like a hawk every second he is out there. We’ll examine the main ways to keep dogs out of gardens and prevent your little piece of paradise turning into a moonscape.


Here are some of the options we are going to consider:

  • Altering your garden design
  • Training your dog
  • Dog proof barriers
  • Dog repellent and deterrent methods
  • Wait it out.

Let’s start with a look at changes you can make to your yard/garden to make it more compatible for life with a dog.

Altering Garden Design

The first option we’ll consider is making changes to the design and style of your yard to keep dogs out of garden.

One of the problems with dogs is knowing which areas are off-limits to them. This is much more difficult if the boundaries are blurred or not physically obvious. The point where grass ends and flowers begin might be clear to you, but it isn’t clear to a puppy. Raised flower beds with a solid boundary help dogs make these distinctions. Putting plants in heavy raised tubs can reduce digging, so can replacing grass with paving or pebbles. You can get great ideas for designing gardens that are home to dogs on Pinterest.

Redesigning your garden can be a great solution if you can’t keep dogs out of garden areas you own, or you don’t want to.

Training Your Dog

Training is certainly an option. Dogs can be trained to remain in one particular part of a garden while avoiding others. But it isn’t as simple as teaching a dog to sit, and it requires your active participation until they are fully trained. If you plan to undertake this kind of training, you will need to monitor your dog continuously while he is outdoors for some time to come, and to spend several minutes a day, two or three times a day, on training sessions.

Here’s a Kikopup video that will give you an idea of what’s involved.

This is useful training. But it’s also training that is best suited to those who are normally out with their dog in the yard or garden. If you ultimately wish to leave your dog outdoors completely unsupervised, relying on a trained behavior is not something that even I, as a relatively experienced trainer, would consider doing. For the unsupervised dog, the best remaining option to keep dogs out of garden areas is likely to be dog proof barriers and/or a dog repellent.

Dog Repellents vs Barriers

We mentioned raised flower beds earlier to keep dogs out of garden areas. These may deter dogs from straying onto your plants, and they can help you train your young dog to respect the flowers when you are in the garden together, but they are not dog proof. Raised beds are not going to stop a determined digger from mounting an attack on your roses. So, how do you keep dogs out of garden areas?

I’ve seen mulching with rose pruning suggested, but I would worry about dogs getting thorns in their pads. A better alternative is pinecones, especially if those are abundant in your area. Protecting your plants with permanent barriers is likely to be an unappealing option to keep dogs out of garden areas. Both because it is hard to build attractive barriers around flower beds that are actually dog proof and because it is a lot of work.

Think of Your Dog’s Age

With a puppy, you may decide a better option is to compromise with temporary fencing – wire netting for example – around your flowers and accept that your yard isn’t going to win any competitions this year.

If it’s an older dog causing problems, a simpler option might be to fence off part of your yard specifically for the dog to play in. Create an exercise yard or dog playground of some kind. These can be quite attractive and again, Pinterest is a good place for inspiration.

If none of those appeals to you, that leaves us with dog repellents. Let’s find out what a dog repellent is, whether dog repellents or dog deterrents work, how safe they are, and where you can find them.

Dog Repellents

A dog repellent is something that a dog finds unpleasant and will choose to avoid. We are not looking at hand-operated training devices here, but rather at repellents that you can set up and leave. The idea is that the repeller sits in the area that you wish your dog to steer clear of and it works in your absence.

To act as a deterrent, the device must create an environmental trigger that a dog dislikes and may find upsetting. This is not something to undertake lightly or with a nervous dog or one that lacks confidence outdoors. Dog repellents for gardens fall into three categories:

  • Ultrasonic – dog repellents that use sound
  • Dog repellents that use water
  • Chemical or odor dog repellents.

Dog Repellent Sounds – Ultrasonic Dog Repellers

A number of US patents have been filed for animal repellers that work by emitting a shortwave high-frequency sound. The idea being that humans cannot hear sounds over 20,000 Hz (known as ultrasounds), but animals can and will try to avoid them because they find the sound unpleasant. That’s the theory.

Devices aimed at the homeowner for use in the yard or garden generally consist of a small square or rectangular box. They are mounted on a spike which can be pushed into the soil of your flowerbed or lawn. The question is, do these devices actually work? And the answer is unclear. A number of studies have been carried out using these devices on mammals over the past several decades.

Efficacy of Ultrasonic Dog Repellers

In 1990, two experiments were carried out on a group of dogs using three different electronic units. In the first experiment, no device repelled all dogs but some dogs exhibited aversive behavior to two units. With the second experiment (with modified equipment) one unit had an immediate effect on nearly all dogs, with half reacting aversively.

Ultrasonic repellers were also tested on White-Tailed Deer in 1998. Some were fitted with strobes and some were not. Only the repellers fitted with strobes were successful at repelling deer from feeding stations.

A study carried out on cats using an ultrasonic device showed a modest deterrent effect. The authors of the study noted that the effectiveness of the device increased over time and concluded that it could be further improved by more careful positioning of devices. A study published in 2007 tested on dingoes concluded that the ultrasonic device studied had no measurable deterrent effect. A more recent study, carried out on badgers at feeding stations in the UK concluded that ultrasonic devices may even have attracted badgers to the baiting stations!

What Do The Results Mean?

It appears the results are very mixed as to whether these ultrasonic repellent products work to keep dogs out of garden areas. It’s worth remembering that most of the studies carried out on these devices use feeding stations to attract the animals to the device in the first place. At a feeding station, there is strong motivation for the animal to put up with the aversive effect.

Digging up flowers is not usually as motivating to a dog as food, and it is possible that the device will fare better in this situation than it would in a trial. Despite that, we feel that the alternatives are more desirable.

Choosing an Ultrasonic Repeller

What do the manufacturers of these ultrasonic animal repellers, and their customers, have to say about the success of their products? Most of these products seem to be manufactured in China or Taiwan, and unfortunately, the manufacturers’ websites lack information or links to sources that back up their claims.

We can, however, read the customer reviews on these products. Here are some of the products available today and what reviewers seem to think of them. The ones with the best reviews all seem to incorporate some kind of flashing light in addition to the high-pitched sound they emit to keep dogs out of gardens.

Best Ultrasonic Dog Repellers

The Hettak Animal Repeller is a green box that you locate in your yard and claims to repel all manner of animals from your garden.

It’s waterproof and solar-powered, can be plugged in or run from a battery (not included). It can be attached to a fence or wall and has a good proportion of positive reviews. You can read those reviews here

Pestzilla Outdoor Animal Repeller

The Pestzilla outdoor animal repeller is a ‘box on a spike’ type of repeller and claims to be particularly powerful. It incorporates flashing LED lights –

From the White Tail Deer study, we can see that strobe lights did have an effect on deer. Whether they would bother dogs, is a question that remains unanswered, but the majority of Pestzilla’s customers seem happy. Check out the reviews here

BestGreen Animal Repeller

Another repeller that received a high proportion of good reviews was the BestGreen.

This model also combined LED lights with the ultrasonic noise. Here are the reviews

Don’t scare your dog!

Okay, those are some examples of ultrasonic animal repellers that are claimed by the suppliers to be effective on cats and dogs. But here’s the thing to remember. If devices like this work, they probably work by frightening the animal away from the device to keep dogs out of gardens. If you use a device like this in a small area – where your dog cannot easily move away, you are going to have a scared dog on your hands. Possibly a dog that won’t go outside at all.

Dog Repellent Sprays – Water

Dog repellers that use water are similar in design to the ultrasonic deterrents in that they are attached to a spike that you push into the ground. They are also triggered by the motion sensors that detect an approaching animal. Instead of the device emitting a sound, it emits a stream of water to keep dogs out of gardens. This means that the device needs to be attached to a water supply. A garden hose is connected to the water inlet, and the trigger operates a valve that releases the stream.

Studies have shown that water jets can be effective at frightening some types of birds away – herons for example – which may appeal if you have a garden pond whose fish population you want to protect. And in the badger study we mentioned above, water jets were also tested and found to have some effect. Though not a very strong one. The devices did reduce food intake at the feeding station but not badger activity overall.

Bear in mind though, that there is less motivation for your dog to approach a flower bed than there is for a wild badger to tuck into a free dinner. So, in theory, it should take less to stop him.

How Water Repellers Work

This is a fairly typical water spraying animal repeller. As you can see, the water repeller is rather more substantial than the ultrasonic repellers and needs a water supply. Many people are buying and using these for repelling wild animals such as deer or the neighbor’s cats. It is debatable how well they might work on water-loving dogs like Labradors. Though, of course, taking a dip in your favorite pond is not the same as being squirted in the face.

Again, the risk with using an aversive like this is unwanted effects. A dog that won’t swim on the beach because he has developed a fear of water spray for example. It could happen.

Dog Repellents that use Smell or Odor

There is evidence for the limited effectiveness of certain chemicals or odors as dog repellents to keep dogs out of gardens. But when using these solutions, there are factors to be aware of. Outdoors, any kind of chemical that you apply has the potential to both

  • Have some effects on the surrounding area
  • Break down and become ineffective soon after application.

Provided that you are aware of these two issues, dog repellent sprays that keep dogs of the flower beds using unpleasant odors may be something you’ll want to consider.

Examples of these Repellents

Two such repellents are methyl nonyl ketone and cinnamic aldehyde. In laboratory tests these chemicals reduced damage by dogs and cats to garbage bags by 70-80% and in the field by about half that amount. Most of the products available to the public, however, contain natural ingredients – substances that dogs don’t particularly like such as eucalyptus – but the reviews suggest that they are not particularly effective.

The Labrador Handbook by Pippa Mattinson

Repellent sprays with names like ‘liquid fence’ and ‘critter ridder’ sound appealing but may have limited effects to keep dogs out of gardens, partly due to the nature of being outdoors.

If you want to try something like this, you might be better off creating your own home-made concoction. A lot of dogs dislike citrus fruits like lemons. A few lemon slices or citrus peels around your roses might just do the trick. Or you could try placing cotton wool balls soaked in vinegar or ammonia around your precious plants. Mind your fingers and watch closely – some dogs will eat the weirdest things!

Should You Just Wait it Out?

Sometimes, the best option to keep dogs out of garden areas is to wait out this phase. The secret to nice flowerbeds and a fruitful vegetable plot in a yard shared with a Labrador puppy is usually more supervision and/or restriction. Just like we need to move trash bins out of the way (or use puppy proof lids) in the kitchen when leaving a dog alone there, so we also need to take steps to restrict a puppy’s opportunities for mischief outdoors. Put up a few barriers, or move things around a bit.

This may seem like a big deal now, but it really is worth it. By the time your dog has passed his second birthday, he will probably have lost much of his passion for landscape design. Hopefully, you will be able to relax and give him free run. Until then, you will find life a lot simpler if you put a temporary fence around your vegetables, move your tubs and planters where he cannot reach them, or fence off part of the yard for your puppy to play in.

When it comes to puppies, it is a good idea to pick your battles carefully. This is one that you may struggle to win.

How To Keep Dogs Out Of Your Garden - Training tips and great products.

The Labrador Site Founder

Pippa Mattinson is the best selling author of The Happy Puppy Handbook, the Labrador Handbook, Choosing The Perfect Puppy, and Total Recall.

She is also the founder of the Gundog Trust and the Dogsnet Online Training Program 

Pippa’s online training courses were launched in 2019 and you can find the latest course dates on the Dogsnet website

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