dc38
Flashlight Enthusiast
It's funny you should ask that, because that was exactly my primary intended use when I got my first "tacti-cool" flashlight. I never got to test it because I later convinced myself to give an ultrasound device a try, so when push came to shove I preferred to pull out that one (while also having the flashlight on me). So all I can tell you for sure on this subject, after two real-world tests (actual aggresive dogs coming at me, not pets and not dogs behind fences), is that you can have a reasonable expectation that if you're up against a single aggressive dog that happens to not be deaf you'll be able to keep it at a respectable distance (10 steps/yards or so) by blasting it with ultrasound and yelling at it at the same time.
Strobes alone of any frequency do not deter dogs at ALL. It either further agitates them or excites them to beyond the point of manageability. My sources are my experiences with strobing many aggressive off leash dogs and getting yelled at by irresponsible owners later. I believe it has something to do with the way a dog sees color and light, and that their vision is more movement sensitive. I've strobed crazy chihuahuas, crazy pit bulls, crazy pugs, crazy greyhounds, angry mutts, etc; none have stopped their charge from strobe alone, and I almost got bit the first time by a pair of boxers. Bellowing out and advancing toward the dog with a towering demeanor will more than likely confuse the dog. And a confused dog usually runs. Fortunately, I haven't run into any German Shepards. Being fiercely loyal, I don't think their territorial nature would let them run. Unless you can condition a dog to fear the strobe (pair with an inhumanely uncomfortable experience like zapping or stick beating) strobe will NOT work on dogs.