Use in early Spring and Summer. Do not apply for 4 days before mowing and 3 days after. Use on a dry still day when soil is moist. Lawn should thicken and become a rich lush green colour. Weeds will start to die after a few days but full control may take 5 weeks for some weeds. Moss will blacken and will need to be raked out after 2 weeks. Water in after 2 days if rain has not fallen, avoid walking on treated area until the product has been watered in.