Our new Asphalt Special Blend Cleaner from Bio-Dry is seeing great results when it comes to special case uses on asphalt. We are getting good responses on hydraulic fluid spills and stains. Usually a visible difference within days and almost completely eliminated within 2-3 weeks. This product is designed to be applied generously to the stain and brushed on with a thick bristle broom. Environmental Response Companies are starting to purchase in bulk.