With an innovative, unique foam-trapping action, the product quickly kills insects on contact. It has a powerful jet spray that can reach up to 25 feet. It's made for outdoor residential use only and is safe on ornamental plants and shrubs when used as directed. It won't stain most home siding and asphalt shingles depending on the condition and cleanliness, so you can use it after testing it in an inconspicuous area. This product contains a 0.5% concentration of its active ingredient, Permethrin, an insecticide that is a powerful killing agent on insects. From a safe distance apply directly into holes that were made by carpenter bees, or apply to surfaces to repel bees from boring into the woodKills on contact