Well, I just sent for some yesterday, - but there are different kinds.Some are mists and some are jetts, some last 5 one second bursts and some are 10 1 second bursts.
But it is a add on for me.
I also bought a million volt stun gun that recharges by plugging in and is the size fo a cigarette package(Was about 30+$ on ebay. Has a handy holder too. I often work, hike and ride alone so it is part of my safety package. The biggest risk seems to be loose dogs, there are coyotes, and some bears around too. I put a clasp on it and it can hang from a beltloop. I usually have it hooked together with my cell phone,keep them together on my purse when out, and unclasp and hook on my belt when I go outside. I always keep it on my body.I usually have a lock open pocket knife too when outdoors.
The stun gun is a last resort, if attacked by a predator, figure it may even make a bear think twice (well, a small one ;0)
Looks about like a cell phone in a case, and I don't advertise it, but can easily slide it into a pocket, when I want to be cautious.
Have had a dog or two come at my horse and no predator is going to injure me or my horse without me attempting to defend us.
As to ammonia, it is not going to stop any dog who is in attack mode, it may deter the neighbors puppy, but I have small terriers and occasionally there is an altercation (2 have food issues) and you can pick one up and he lifts the other with him...water, yelling, etc. doesn't get through. You have to get a barrier between them.These guys only weigh about 20 lb. Same behaviour in a 75-100 lb. dog, no way.
"Ceasar" the dog trainer guy, had an episode about attack behaviour, he said , their eyes glaze over and they can't respond , once the 'blood lust" takes over. You can only pre-empt it--once it starts -they won't stop of their own accord, till they feel they have won, or "killed it".
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