Ultrasonic 3-Mode Dog Trainer and Repeller with 2-LED Flashlight

Pros: 1. Really works - repels dogs when I ride my bike
2. Handy shape - I put it in a pocket on the bike-mounted bag, it feats well and can be easy taken from. I take it in my hand when I see dogs that seem interested in barking at and biting a bike-rider (me).
3. Use common 9V battery - still works with a unit I get from DX more then a year ago, but when I need to replace it, I easy find next one.
4. Light-weight.
5. Bright yellow colour, easy visible - I don't forget it on the shelf at home when go biking.
6. Well built - when I drop it on the road, it don't cracked or something, it's OK and still works.
7. Have 2 for me and my friend - both units work well.
8. Street dogs really quickly understand the signal of this thing and change direction on the go at once :) One second a barking beast goes to your bike, and next second a creature quickly goes from you!!! This dog-repelling stick saves a lot of nerves and even give you some fun.
9. Cheap. Costs 3-5 times lesser than the same units in local stores.

Cons: I would prefer bigger working distance - more then 5-7 meters that it do now.
Don't know how it will work with trained dogs - but that are more rare then ordinary street dogs.

Other: Do what it expected to do, and do it well. Costs it's price.

Pros: It is really working with in range.
all dogs influenced but not too much
they only put their selves out of the way
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Gerçekten ise yariyor, bütün köpekler çok etkilenmeselerde en azinda yolunuzdan çekiliyorlar.

Cons: I wish it could be more effective
generally old dogs are not affected
my advice, do not expect too much performance
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daha etkili olabilirdi, fazla bir beklentinin ötesine geçmesini beklemeyin sakin

Other: available for tracking and walking activities
I recommend
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Tavsiye ederim, sokakta, dagda bayirda yürürken ise yariyor

Pros: I used it to make my dog stop barking to the neighbors at the apartment door. It only took me two days of training and she drastically reduced the barking. One week of training and she completely stop barking to my neighbors. It was awesome! Be aware that to be effective you have to use the device and command the dog at the same time, so it will know that the annoying sound has a purpose.

Cons: - It could be smaller - You cannot choose the color (mine is an ugly yellow)

Other: I know that it might not work for some dogs, but in my case it was very effective! Just for the record, my dog is a miniature white schnauzer.

Pros: Useful devices, especially cycling, good workmanship, very attractive price. Even a dog can be seen effect of 10-15 meters. Device is comfortable to hold in your hand and work with him so easy. Dog training mode also works.

Cons: Sometimes it does not work, the beam button does not give good contact (maybe the battery is low) places to light without sound. The divice might not work for all dogs with the same efficiency.

Other: Very good investment especially for the price of which is available .

Pros: Repels dogs as advertised

Cons: Could have been smaller? Sometimes some dogs are not affected. And the range is sometimes intimidating but I suppose having a larger range drains battery more quickly so I think this is on purpose. Still protects however so that shouldn't be that much of a problem.

Other: For this price and this service, I will not hesitate to buy it again!

Pros: Efficient instrument capable of protecting the person from possible attack aggressive watchdog. Effectively deters the dog from a distance 5-15 meters. I warn you that it is not very effective against the deaf and specially trained dogs!

Cons: Build quality could be better, but frankly I did not find flaws.

Other: I recommend the use of the device. Do not forget to replace the dead batteries :) Video demonstrating the operation of the instrument and the review on russian language can be seen here - http://theurfinus.livejournal.com/18434.html