Electronic Spider Repellers

There has been much debate over whether or not electronic pest repellers are successful in eliminating spiders from a building. So recently I have been testing one of the better ones out in my own home. I chose a repeller with 3 important functions that when combined, serve to really annoy our eight legged enemies and drive them from the house.
1) Ultrasonic waves.Much like a dog whistle almost all the pest repellers emit an ultrasonic sound that humans can't hear. If you were a spider this ultrasonic noise would be extremely uncomfortable, similar to putting your ear right up next to a loud police siren. The spiders react to the ultrasonic sounds the same way we would to the police siren or any other loud uncomfortable noise and flee far from the source of audio discomfort.
Although humans and pets aren't affected by the ultrasound, pests are startled, disorientated and absolutely do not enjoy the uncomfortable sounds the repeller delivers.
The better repellers use a variable pulse generator to vary the sound frequency continuously, so the spiders and other pests cannot get accustomed to the ultrasonic noise at all and are forced to vacate.
2) Electromagnetic waves. This is a relatively new technology for pest control and is a very powerful deterrent for our spider enemy. Electromagnetic pest control uses the wiring within the walls, turning your whole home or office into a giant pest repeller. Similar to making a telephone call, when you speak your voice travels through the phone lines at a certain frequency.
Electromagnetic pest control utilizes your wiring by simply sending a shifting signal through the wire, tuned to irritate the spiders central nervous system. This technology will not affect humans, pets or electronics and doesn't increase your wirings own electromagnetic energy it simply changes the frequency to target small pests like insects and rodents which easily pick up the changes in the electromagnetic frequencies. The signal is turned on and off every few seconds so the pests can't build up a tolerance.
Spiders communicate through vibrations. Electromagnetic vibrations from the repellers communicate to them, disturbing their receptors and making them feel they are in a hostile area, where they are not welcome as a result it drives them out. Also these electromagnetic waves confuse them, making it difficult or impossible for them to gather food, breed and build their webs, or communicate with each other.
Unlike traditional pest control (chemicals, poisons, gases etc.) electromagnetic repellers are completely safe for people, pets and electronics, however, if you have a rodent for a pet you shouldn't use electronic pest control, because you'll drive it crazy!
3) Ionic technology
This is one of the latest in electronic pest control technologies. Ionic technology has been used for years in air purification. The beneficial negative ions it creates act to destroy harmful airborne pollutants, including bacteria, dust mites and many other unseen pollutants.
Ions are every where in our atmosphere. Negative ions are beneficial ions that penetrate into walls and living areas cleaning the air where ever they travel. Negative ions are produced naturally by lightning before a storm. They are part of the reason things smell so fresh after it rains.
Spiders and other pests are sensitive to negative ions. Long before it starts pouring down with rain, spiders can sense a change in the atmosphere and they look for shelter. This new ionic pest control technology confuses them and they seek shelter far from the reach of the repeller.
A nice side effect of the ionic repeller is that it cleans the air in your house too.
Ionic pest control works in two ways. Firstly, the ions affect the spiders directly causing them to seek shelter elsewhere, and secondly, by helping clean the air of odors the spiders are less likely to be attracted to odors they associate with a food source as a result they will look for their food elsewhere.
So now you can easily see that a pest repeller that incorporates all three of the above technologies is a very effective defense against spiders in your home or place of work. I have seen a dramatic reduction in spider sightings in my house since I have been using one.

More info at http://www.spiderpanic.com/