Michael from Fenton Mo writes
Due to direct sunlight and hot temps, the dust is baked into the concrete and will not clean off the surface.
If you have already tried scrubbing the area with hot soapy water to remove the baked on Alpine D Dust Insecticide with no success, you may consider pressure washing the affected area. You could also contact the manufacturer directly for additional tips by either calling 1-800-777-8570, or by visiting their website's contact page here.
Answer last updated on: 08/19/2021
