wash the blanket in warm water using baby laundry detergent (such as dreft or woolite). when drying the blanket tumble dry on low or air fluff, i find that air drying the banket keeps it from pilling.

it is the nature of fleece fabric to start pilling after several uses/washes, you can buy pilling shaver mechines at fabric stores (such as joannes fabrics or michaels, even walmart!) that you can use to trim the pillings off.

Good Luck!