New Pig Spill Blocker Rough Surface Dike stops spills on asphalt in their tracks with a liquid-tight tacky bottom layer that seeps into surface cracks. Polyurethane material resists water, oils and many chemicals. High-visibility yellow top color draws attention to spill for increased safety. Light-weight dike is easy to handle and deploy. Intended for one-time, limited term use; ideal for containing hazardous or other liquids on rough surfaces. Temperature limit: -10 to 120 degrees F.