Sounds around us is one of the ways Mother Nature has to warn us, attract us to something, and for humans during these so-called modern times, enjoy and relax. It can be a very powerful tool.

Psychological operations warfare specialists know about this. A lot of tools and technologies have been weaponized, we all know that. Most of them are kept under secrecy, some other ones have been available for the public. The power of sound should not be underestimated and should be handled with care. Sound can break glass or even cause permanent injuries.

Caveat Emptor, dear fellows.

I don't want you being harmed while playing around with these things, ok?

You can use the power of sound to deter criminals from your property.

Annoying sounds are something that many of us don't tolerate.

Pets, wild animals, and many humans try to avoid it, reasonably. Some animal species even use it as a very effective deterrent, even if the real defense capability of the animal itself is not that big. Yes, I mean those tiny dogs that will bark their guts out and will make the subject of their attack go away just to avoid their extremely annoying noise. (I love dogs too, but the large, quiet, cute and peaceful kind of ones, although I am a cat person. But tiny aggressive dogs just don't fit my bill…my mom had one for years and he was a real pain)

One of my main concerns, given the attack to the rights of the individuals to defend themselves that any dictatorship brings along, was to find a way to avoid being harassed by marauders at my very own doorstep (something very common these days). The opportunity crime is in our area was the most common threat, on a daily basis. Therefore I could reduce it by getting out less and much closer, avoiding going out on high transit days like paydays or some "special" days, etc. Thugs usually know people are out there looking to spend some money and will be hunting easy prey.

Deterrent devices are affordable and easy to install.

This said, one of the most affordable and at the same time less harmful deterrent devices I could identify was the high pitch sound "alarms".