Box Elder Bugs are considered tree pests especially in the fall

Solution: We encourage a live and let live attitude. If you can live with them nearby, do so. If the tree is ailing and old, removing the tree will lessen the congregation sites for the bugs. They may find another suitable host close by.

Considered non-toxic to humans, a dusting of Boric acid will deter them from window areas and door crevices.

Life Cycle
In the spring they may weaken the tree by feeding on the softer plant tissues, including the flowers, new leaves, new twigs. However, there may not be visible signs of eating damage. Only a huge infestation will result in permanent damage to a tree. A crop of eggs are laid and nymphs hatch a few days later. Nymphs are brighter red and can reproduce in the same year. In summer, they go about their business, eating and mating.

In the late summer and fall, the mature box elder bugs are moving to new locations where they will hide in a protective location to overwinter. You may see them under siding, or tucked into the crevices of your storm windows. This is when you may notice them in large numbers.There can be two or three generations alive together in a colony through the fall.

Once winter sets in, adults are the only ones to survive. Recurring populations may cumulatively damage a tree over years.

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