Tension Wire is low expense, deterrent system that is effective on flat surfaces, which you wish to keep birds from landing. This system consists of posts, which have a thin wire run through attached to springs. Since the post come in various heights it is good for deterring various species of birds, not allowing them to land or roost. This system is also very discrete when installed properly and the wire use is no thicker then such you’d find used for fishing line. The biggest problem found with this system is a large bird landing and snapping the wire.

Bird Netting is really the only true Exclusion method that when installed correctly will completely eliminate birds from an area. The Bird Netting comes in a variety of colors so that it can be matched as best as possible to the structures color. The net can also have zippers installed so that areas inside the net can be service if required. A trained Bird Exclusion Expert should be able to run the cable and attach the net in away so there is no sagging making the net is virtually undetectable. The only real con to the netting is if it is not installed properly, a cable snapping, a guide falling out of the wall or net gets torn some how, a bird may be able to gain access and sometimes trapping it above the netting.

Another deterrent, the Electrified Track system, uses low voltage, electric shock to deter various species of birds from landing on ledges, signs and other flat surfaces; the shock does not harm the bird but scares them causing them to fly away. This system is low profile so it is hard to detect when installed properly and these systems run off of 110 power units or solar powered units. The biggest draw back of this deterrent is like any electronic device you run the chance malfunction, like a short in the system which could be caused by a bird defecating right on the track requiring it to need more servicing then one of the other deterrents.

This Spike is entirely made out of Stainless Steel so you are eliminating completely all the cons that you were getting with the Poly-Spike. If this spike is installed correctly then you shouldn’t have to worry about it going anywhere for a long time. The only real draw back, which is the same with all varieties of spikes, is that they aren’t effective against smaller birds like Sparrows.

While a little more expensive then the Poly-Spikes, getting Stainless Steel Spikes versus the Plastic is a sure-bet. The Stainless Steel will not break no matter what size bird lands on it and will not become brittle over time from environmental exposure. The draw back is that you will have a plastic base which has all the draw backs of the Poly-Spike with it becoming brittle or being over tightened upon install causing stress cracks. Another draw back with all varieties of spikes is that they aren’t effective against smaller birds like Sparrows.

Poly-Spikes are a very cost effective way to deter larger birds; like pigeons, seagulls, black birds and starlings from landing and roosting on unwanted surfaces. The Poly-Spike is the most inexpensive of all the spikes since it is construct entirely of plastic compound. The pros with going with this spike are its low price and its effectiveness with deterring birds. The cons are that since this is a plastic spike it is more likely to break if a large, heavy bird tries to land on it. Even though they are UV treated, environmental factors are still relevant and can break the spike down over time, making it brittle allow the spikes to fall down. Besides environmental issues if the installer chooses to screw the spike down and over tightens the screw causing even a hairline crack in the base this compromises the integrity of the spike causing the spike to loosing and eventually fall. Another draw back with all varieties of spikes is that they aren’t effective against smaller birds like Sparrows.