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Insects and other pests can attack poles in most geographical areas. Termites, wood-boring beetles, and even carpenter bees and ants, may cause serious damage. Poles that are heavily infested with insects attract wood-damaging birds, such as woodpeckers. Fire and improper handling of poles during installation or maintenance can also cause damage.

(1) Termites and other insect damage.

(a) Termites. Two classes of termites attack poles: the ground-dwelling termites, which are found in practically every state; and the dry-wood (or aerial) termites found only in the south. Generally, the same measures taken to prevent decay-good preservative treatment-also prevent termite attack.

(b) Ants. Black and brown carpenter ants are often a serious problem, especially in cedar poles in the northeastern states. The ants enter the pole through a check (separation along the grain of the wood occurring across the annual rings) or injury and construct galleries that seriously weaken the pole near the ground line. Unlike termites, they do not use the wood for food.

(c) Control. Ants may be effectively destroyed by injecting about one pint (0.5 liter) of an approved termite repellant into the interconnected galleries. This can be done with an ordinary grease

C-1

TM 5-684/NAVFAC MO-200/AFJMAN 32-1082

gun, fitted with a suitable nozzle, applied at two or three holes bored to connect with the galleries. Occasionally, ground-dwelling termites are found in otherwise sound poles, and they may be destroyed in the same manner.

(d) Certified personnel.

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