Businesses in the grain, seeds and feeds category supply agricultural commodities and inputs to farms, food producers and other trade customers. Grain merchants buy, sell, store and handle crops such as wheat, barley, oats and maize, arranging cleaning, drying, grading and transport where required. Some also supply grain for milling, brewing, animal nutrition or other processing, and may provide services such as crop marketing, sampling and quality testing. Seed suppliers offer varieties for crops, forage, grassland and cover cropping, with advice on selection, sowing rates and establishment. Feed businesses provide products for livestock and other animals, including compound feeds, straights, blends, minerals and supplements. Feeds may be formulated for different species, ages or stages of production and sold in bags or bulk. Suppliers can often arrange delivery and advise on storage and handling; the range of products and services varies between businesses.