Machka 

I came across a recommendation for this product in an article about running, and it sounded like a good idea. It's also not very expensive, which is appealing.

https://www.kiienterprises.com/

https://www.kiienterprises.com/dazer/index.html

The Dazer II

"Using the latest ultrasonic technology, the DAZER II produces a discomforting but not harmful high powered sound, audible to dogs but not to humans. Help stop the approach of unwanted dogs at up to 20 feet. Also a useful aid in training dogs. Made of lightweight high impact plastic, the DAZER II features a belt clip and low battery indicator, includes a long life 9 volt ENERGIZER® battery and is MADE IN USA."


Have any of you heard of this product and/or used it? If so, what do you think?

Michigander

The original one failed on my grandpa.

SSP

I doubt it works, and here's a review that says as much:

https://www.crazyguyonabike.com/journal/?doc_id=194#4864

Per the author of that review, pepper spray is still the best deterrent for dogs (and, unlike the Dazer, it could be used in a confrontation with a two-legged varmint too):

https://www.crazyguyonabike.com/journ...doc_id=194&v=a

ItsJustMe

If there's an aggressive dog that wants a piece of you, you don't want a product that "helps stop" the dog. I've never read a single actual user comment that said these things work. I think they're snake oil.
I've read stories of dogs that keep trying to attack even with their eyes clamped shut and watering like crazy, face full of pepper spray. I don't think an uncomfortable noise will even faze them.

NoRacer

A blast from my Delta Airhorn (a.k.a., AirZound) usually does the trick for me. And, it may alert the owner of the dog as well.

colinm

Blast from a .410.

Kidding.

When a dog runs at me I turn into him, if I can, and stop. Freaks them out, they don't expect it. I've had Dobermans so I'm pretty comfortable around dogs. And if I get eaten, I get rich...right??...erm...

jeff-o

I've got a 115dB siren on my trike. I haven't had the chance to try it on a dog, and hope I never will. Fortunately there are leash laws in effect in my city, so I probably won't have a problem...

Michigander

Haven't you ever seen a hot, but stupid 90 pound spinner chick with a 100+ pound attack dog? I've been charged by such a dog.

HAMMER MAN

water bottle with a squirt to the face, so far seems to work

Nermal

Thinking about one of those nylon straps worn around the neck that often carry a key or ID card. Maybe one with real stout fittings and a big wad of heavy keys. Probably too awkward to swing from a bike, though.

aikigreg

ultrasound has been proven not to work in the slightest. Better off with an airzound, a whistle, pepper spray, etc.

I yell "GO HOME or GET OFF THE COUCH" when the mutt gets close. Had worked perfectly so far - they stop dead in their tracks, which lets me get away before they run again

colinm

Some sort of device that activates on the pull of a string - a ripcord, let's say - that dispenses doggie biscuits from a compartment at the rear of the bicycle. Like chaff from an F-16. Countermeasures?

Keith99

I have 2 fair sized dogs. (105 and 110 lbs). A couple of years ago they had a run in with a skunk. While it drove us nuts until we could bath them properly it did not bother them at all. I doubt pepper spray would stop them, but it might make them really really angry.

That is one thing I like about the idea behind the Dazer. It is very unlikely to anger a dog. Also, if it works, it is apt to work on all the dogs present. Pepper spray and the like has a problem with more than one dog.

The article posted saying the dazer did not work is likely right in its observation, but wrong in the conclusion. If you invade a dogs territory, which is what the 'tester' did, that kind of device is not going to be effective. When you are someone fun to chase outside the dogs home the deterrent effect can overcome the fun to chase asect of a cyclist.

Remember alway look at the tail!

baj32161

Did anyone read that guy's bike tour journal? It was phenomenal!!!

mcavana

+1 works like a charm for me too...

Keith99

Like the idea. Even if it "fails" meaning the dog does not give up the odds are very very good that it will at least flinch and that should be enough for you to be gone.

C_Heath

screw all those...lol........



Ive never had one to "keep coming" after a half bottle of this. Im serious, I blast him with half the can. They make it every week. They remember me the next time I come by. Just stand and bark and bark. I understand dog language and while hes standing in the edge of the yard, I hear him say " Im bad! Im a Baaaaad ass dog! However, I dont want anymore halt please, kind sir. Proceed but please remember, Im bad!

lol

Banzai

The only time a dog ran after me, I stopped and very firmly told it "NO!" I think it was shocked at being addressed in such a fasion with words it understood. It sat down and looked at me in confusion, wondering why I didn't want to play the fun chase game.

Banzai

So now you just need to ops test what dispense program works against this particular canine threat. Certain "models" may have excellent flare rejection or chaff/beam processing logic (dependent upon seeking mechanism.)
Finding flares in the right gain control overshoot window, as well as micron signature, or chaff in the proper wavelength/pulsewidth will be crucial. (I.e. flavor of biscuit.)
Then you need to know what rates overcome the CCM (Counter-countermeasures) logic. A dispense rate of one at a time may trip the logic, which will result in squint/rate bias/lambda comp (heat) or beam/chaff doppler search programming (radar), which will still result in a successful guide. You need a dispense rate that will first trigger the logic, and then convince it that a subsequent countermeasure is a target. (I.e. enough biscuits to attract it's attention!)
Clearly, there are many technical issues to be worked out with this.

2manybikes

Have you had any success with other methods in all your miles?

Machka 

Ummmmmm ..... you might already know this story ... and although I guess you could say I was "successful", it is the reason why I'm looking for an alternate method:

https://www.machka.net/brevet/2005_300.htm

I'll just post the pertinent section of the story:

"With about 50 kms to go, darkness fell and I was out there all alone at night ... and I don't like that. Of course, the typical night time thing happened ... I was motoring along at top speed, and getting absolutely nowhere. Sometimes these rides seem to take forever at night.

But just to liven things up a bit, all of a sudden out of the darkness, there was a HUGE white dog in the ditch coming after me ... I picked up speed then heard a different tone of a bark ... something deeper. There were TWO of them, and I couldn't see the second one. Plus the second one only barked twice so I couldn't even place where it was from the barking. Two dogs scare me much worse than just one because when there's two, they are pack hunting, and they are sneaky! I would have loved to have seen my computer just then ... I think the speed I reached is something like what I want to do on my time trials!! I was shaking so hard pedalling was difficult when I'd outdistanced them.

Then just when I had calmed down a bit, I heard a rustling sort of sound coming from the other side of the road, and when I glanced over there was another HUGE white dog right there by my leg. It had snuck up on me!! I let out an involuntary scream that would have woken the dead ... and the dog stopped dead in its tracks! After that I was sprinting at every little rustle."



I hit upon another method that worked on my 1000K randonnee. I was climbing a fairly steep hill, and because, at the time, I wasn't very good at hills, I decided to get off and walk ... so I dismounted. Just then a huge black and brown dog came running toward me from a little farm just there. I have a terrible time starting again on a hill, so hopping on my bicycle was not an option ... so I was just standing there with this dog barrelling toward me. I moved a bit so my bicycle was between me and the dog, and then started walking slowly up the hill. As I did so, I started talking in a normally toned, calm voice ... I don't have a clue what I said, but I think I was talking about the hill and the trees and how nice it must be to live in such a pretty area ... and all of a sudden the dog stopped running, let out a couple big "WOOF"s and walked back to the farm. I'm guessing I didn't appear to be threatening ... so it didn't have to defend the farm.

jcm

I suggest a dispense rate ratio of, say, 1:4 - beef jerky/dog bisquit. That'll ground 'em.

ponchotempest

If not pepperspray, they do understand a good hard boot. Not that you should go kicking dogs, I love them myself. But if you show it whos boss, it won't bother other riders, who might not be able to outrun it.

Your right foot is the only language a violent dog understands.

2manybikes

That's pretty scary, I've been lucky in the dark so far. One time during the day I did see a pack of dogs running together in the woods. Fortunately we were on motorcycles and could out run them. But even then it was scary as we did not know our way around very well. We could have run into a stone wall or something that would have stopped our escape.

Retro Grouch 

Hmmm. My wife and I were riding in Mississippi with another tandem team when a medium sized dog came running at us. The other stoker calmly took a Bic lighter sized gizmo out of her husband's jersey pocket, pointed it at the dog and made a high pitched eek. The dog acted like he ran into an invisible wall, turned around and walked off. I'll admit that's only one example, but it flies in the face of "Proven not to work in the slightest."

We haven't found the need for any dog counter measures. My theory (which I hope isn't disproven on tomorrow's ride) is that dogs sense the people who are afraid of dogs and harrass those people. My wife usually talks baby talk to them: "Hello baby. How you doing today? Do you have fun chasing bike riders?" The dogs generally run alongside of us for a while and eventually get tired and go back home.

My favorite dog story dates back about 25 or 30 years. I was riding in southern Michigan with my neighbor when a medium sized dog came running full speed down a grassy hill toward us. My neighbor saw him coming and yelled "Sit!" in his most commanding voice. The dog certainly knew what to do when he heard that. He planted all four paws but his momentum caused him to do a couple of summersaults before coming to rest in a perfect sit position.