Straw wattles are erosion, sediment, and storm water runoff control devices. They are tubular and straw-filled, held together by photodegradable plastic or biodegradable burlap netting. Each fiber roll is nine inches in diameter and 25 feet long, weighing approximately 60 pounds. They capture sediment and spread water rather than concentrating the flow and volume, as drainage sewers do. Each straw wattle contains natural straw. When left in place, they help prevent slope erosion. After decomposition, they become part of the landscaping.