How to Deal With Aggressive Dogs While Cycling // Review of the Dazer II Ultrasonic Aggressive Dog Deterrent Repeller by Dazzer

, How to Deal With Aggressive Dogs While Cycling // Review of the Dazer II Ultrasonic Aggressive Dog Deterrent Repeller by Dazzer

Dogs like to chase, and it’s pretty hard to rewire a natural instinct, so, on the advice of a friend, we bought a Dazer from Amazon and it works. There. You don’t have to read any further. It works.

Why We Tried It

We like to cycle, and we like to walk our dogs. I’m not great at outrunning much of anything, and I would probably accidentally spray myself with pepper spray every time I put my bike away. I read in Bicycling Magazine how tricky it actually is to dispense the spray. We needed a dependable dog deterrent.

My riding partner ordered one of these Dazer II devices, and we started using it while walking our own dogs, then on cycling rides. We’ve been using it almost a year now, and have our neighbors’ dogs trained not only to cease and desist chasing us, but also to stop barking at us!

I love this item SO much that it inspired me to email the company to thank the owner, and he and I had some good conversations about cycling and dogs. Then, I even joined the Amazon Associates program just so I could recommend this to you – because when we are cycling, and a really bad dog is chasing me – I’m really scared. I think you should have one of these, or two.

, How to Deal With Aggressive Dogs While Cycling // Review of the Dazer II Ultrasonic Aggressive Dog Deterrent Repeller by Dazzer

We Use It. It Works. Get One!

This device stops the dog. You don’t have to read any further if you don’t want; it works. If you want one, then buy one, and you’ll have it. Just remember to take it with you.

A friend of mine recommended the Dog Dazer II Ultrasonic Dog Deterrent; she walks her beagle and collie regularly, and prefers to avoid altercations with other dogs while out exercising. It works for her.

We’ve been using it for nearly a year now. I waited to write about it until we had tried it on several big mean nasty dogs, and it works. You point it at them, then click the button a second or two, and they back down, stop, and even turn and go home.

, How to Deal With Aggressive Dogs While Cycling // Review of the Dazer II Ultrasonic Aggressive Dog Deterrent Repeller by Dazzer

Scary Dogs Chasing Our Bikes

When we’re cycling, there have been plenty of times that really scary big heavy-breathing, fast-running dogs have chased us. My instinct is to dismount, put the bike between me and the dog, and wait for the owner to get them under control.

Read the comments at the bottom to see what the owner of the company says about dogs chasing bicycles, and my technique. I told him the dog is welcome to bite my bike! Eat carbon, you snarling beast! Just don’t bite me.

My riding partner prefers to simply squirt water at them or wear them out; out-run the dogs. Unfortunately, I’m not confident in my ability to do that. I have these visions of the dog grabbing my foot, dragging me off the bike, and biting me. I had read “How to Deal With Aggressive Dogs on Your Ride,” and was worried I’d be mauled.

In actuality, what happens when they chase me is I try to get away from them, which has resulted in me veering directly into oncoming traffic; potentially an even worse situation than fending off an angry dog.

If you’re not going to get one, then go ahead and read this: “You Are Riding Your Bike and Chased/Injured by a Dog – What to Do?” from the Legal Examiner. Or, just go ahead and order aDazer.

, How to Deal With Aggressive Dogs While Cycling // Review of the Dazer II Ultrasonic Aggressive Dog Deterrent Repeller by Dazzer

Scary Dogs Chasing Us On Dog Walks

Our county animal control is under-staffed and over-worked, so even calling repeatedly about nuisance animals takes time. It might take a week or two to see any results from a call, and we have more rides to finish before they might be able to contact the owners. We needed help now.

How It Works

You point it at the barking / charging dog, and press the button a few times.

It does not “zap” the dog or send them an electrical impulse – it’s simply a high-pitched noise that breaks their concentration, and they don’t like it. Read the company owner Keith’s explanation below.

Comments on Amazon

The great thing about ordering items from Amazon is you get to read all those comments and reviews. We never even did that – we just ordered it! My friend said it worked, so we got one.

Apparently, it’s really intended for discouraging barking, and there are plenty of “stopping barking dogs” success stories on the Amazon customer reviews.

Reading the reviews now on Amazon, I see that it works on small dogs, large dogs, dogs barking through fences, and even baboons!  It looks like most of the buyers simply wanted a way to quiet their neighbors’ yappers.

, How to Deal With Aggressive Dogs While Cycling // Review of the Dazer II Ultrasonic Aggressive Dog Deterrent Repeller by Dazzer

It’s So Good, We Bought Two!

We started with one Dazer II, which we kept by the dog leashes so we would not forget it. It worked so well on dog walks with aggressive dogs approaching our dogs, that we started taking it with us on bike rides.

Due to the leashes being in one room, and the bikes in another, we forgot theDazer one ride, and happened to be chased by three separate dogs and a pair of dogs. Once home, I promptly ordered a second Dazzer so one could be kept with the leashes, and one with the bikes.

Your Responsibility to Report

We still call Animal Control about vicious dogs – we are not the only people on the road cycling or walking or running, so we don’t want anyone else getting hurt by a vicious dog.

We would feel awful if we failed to report a dangerous dog, and then it attacked someone else.

, How to Deal With Aggressive Dogs While Cycling // Review of the Dazer II Ultrasonic Aggressive Dog Deterrent Repeller by Dazzer

Sneaky Way to Eliminate Bad Dogs

On a side note about vicious dogs – we live in a small town, and I know several of the ladies who work at the local insurance companies.

Whenever we have a really bad incident; we look up the homeowner’s name, since home insurance is listed by name, not address, and we get the address for Animal Control. After making the call to AC, I then rip off a fast email to all the “insurance ladies.”

Most homeowner’s insurance will not tolerate a vicious dog on the property, and we’ve found that many of those dogs belong to renters, so a landlord is even more motivated to deal with the situation promptly.

, How to Deal With Aggressive Dogs While Cycling // Review of the Dazer II Ultrasonic Aggressive Dog Deterrent Repeller by Dazzer

Tell Your Friends! It Works!

Get a Dazzer. Read the directions. Try it out. It works. And, I get the satisfaction that you can ride, run, walk with more confidence that you are not going to be eaten alive by a big scary snarling dog.

In fact, I was so excited about sharing this product to deter aggressive dogs chasing us while cycling, that later, I was inspired to join the Amazon Associates program because I so believe in the product and wanted to share it. The Dazzer was my first Amazon Associates affiliate product!

So… Deep Water Happy is now a member of the Amazon Associates affiliate program; this means if you click on a link through to a retailer and purchase something, I may receive a very small amount or percentage of your purchase. This does not add any additional cost to you, the customer.  Adding these affiliate links into a post happens after a review or opinion of the product has already been formed and so does not affect the products about which I choose to write.

About Those Leashes

Just in case you’re wondering about the leashes in the photos above; those were about the fifth type of leash we have tried. They are retractable neon leashes by Flexi, and they come in different widths for different dogs.

We tried several brands that had a bit of line before the tape, and the lines kept breaking and getting tangled. Then we tried several types of tape leashes, and they kinked and would not retract after a couple months.

We’ve had these for nearly a year now, and are really loving them. When cars approach, we turn the body of the leash sideways, and it makes a huge reflective spot.

Another consideration was the mechanism – we have had some give out rather quickly, and one variety was nearly impossible to catch, then smoothly release. After several years of trials, we are just so pleased with these leashes by Flexi.

They come in yellow and in blue, and there’s even a Flexi Black Multi Box that opens from either side to hold treats or bags – one roll included.

And you can even add a Flexi LED Lighting System for white light in front and a rear red light, and can be attached with velcro for right- or left-handed use, and daytime removal.

What to read next: Vanderkitten Cycling Kits – Cost Per Wear – Review

Updated April 29, 2019


  • Hannah Hartley January 26, 2019 at 4:27 am

    I’ve been afraid to walk my dawgs as there are too many free roaming pups in my hood. I’ll definitely try one of these so we can walk again!

    • Kimberly January 26, 2019 at 9:03 pm

      When dogs come running toward us while cycling or walking dogs; it’s scary!

  • Kimberly January 3, 2019 at 10:18 pm

    Hi Kim;

    Glad my reply lined up with what you experience! After 30 years of working with ultrasound and the DAZER we have seen and ‘heard’ nearly every situation. You are taking the best approach in my mind – choose your fight and in the end sacrifice the bike to the dogs jaws – not yourself!

    You are correct we do not have any presence on the social media scene – probably should but never got around to doing it.

    All the best – and regarding bears their hearing range is closer to that of humans – so the DAZER output will not be heard by the bear and it would not be likely to have any effect on it.

    Thanks again;

  • Kimberly January 3, 2019 at 10:17 pm

    Bicycling presents some unique situations for the encounters with dogs.
    There are a number of “interesting” sounds that are produced when the air
    passes through the spokes and past the frame itself as the bicyclist speeds
    along. These sounds may in fact even be of interest to the dog and cause
    them to start to chase the bike as it speeds along. the initial interest may
    even be only curiosity but develop into a full blown chase mode as the
    bicyclist speeds up to try to outrun the dog and in turn creates even more
    sound. Thereby creating a real dilemma – is it better to slow down and hope
    the reduction in sounds helps the dog lose interest or to speed up and try
    to outrun the dog! The answer as I’m sure you are aware depends on the
    situation and the dog’s mode. If you are on a familiar route you may know
    the dog is friendly and simply curious, but if you see the dog seems
    aggressive or is snapping or barking fiercely the decision to slow down may
    be a hard one to make – however it may prove helpful in getting the dog to
    lose interest. In any event the use of the DAZER is always a safer bet and
    will usually help deter the dogs approach allowing you that extra time to
    get away.

    All the best and thanks again for the kind support. Safe riding !

    Take care;
    K-II Enterprises

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