is incredibly difficult to break, which makes the bugs hard to kill. To get rid of large numbers of armored bugs, take some more serious steps.
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Seal your house to keep any more bugs from getting inside and to keep pesticide fumes from getting in. Make sure all doors and windows have tight seals, and search the bases of any outdoor walls for holes through which bugs might enter. Seal holes with cement sealant. Always follow manufacturer directions regarding safety and usage.
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Use pesticide on the outside walls of your house. Cypermethrin is an insecticide that acts as a neurotoxin to insects and will kill stink and armor bugs. Follow manufacturer directions for mixing and applying insecticide safely.
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Spray the insecticide throughout the surrounding area if your armor bug infestation is serious. Concentrate on areas where you see many of the bugs and on the undersides of leaves, where bugs lay their eggs.