Answer: Although generally harmless except to boxelder trees, I understand that congregations of boxelder bugs can be unwelcome. There is a very safe solution in the form of silica aerogel, which absorbs the cuticle, or protective layer, on the insect's body,causing dehydration and death. The preferred formulation is the brand Dri-Die, sold by Fairfield American Corp. (201 Rte 17 N, Rutherford, NJ, 07070; (201)507-4880 - in your home state!). It is toxic to fish, so it should not be used where it can contaminate water. Follow the label instructions for application. Other than this, I know of no recommended repellent.
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