Woolgro lawn mats combine the natural nutrients found in unscoured dag wool with the moisture retention properties of natural recycled jute and paper fibres and the best grass seed for your location. Unscoured dag wool typically contains a handy range of natural nutrients well balanced to feed grass and the natural nutrients slowly release into the soil resulting in thick healthy green grass with strong deep roots. The recycled fibres holds approximately 60% of their own weight as water.