Lint balls on clothing -- sometimes referred to as pills -- show up when fabrics rub against each other during laundering and everyday wear. Pilling from normal wear is often unavoidable, but proper laundering techniques can help you prevent lint balls on pants.
Turn the pants inside out before washing and drying to minimize pilling. Wash the pants on a short wash cycle -- such as the gentle cycle -- and take them out of the dryer promptly.
Put your pants inside a mesh laundry bag before tossing them in the wash. The bag still allows the pants to get clean, but helps to protect them from other items in the washer that may transfer lint balls.
Avoid overfilling your washing machine. Put only enough clothes in the washer so that they can all move around freely. Preventing the garments from tightly rubbing against each other will reduce pilling.
Put a piece of nylon netting in the dryer with your lint-prone pants. Nylon netting will hit the pants during the drying cycle, knocking off the lint balls that formed during washing. Buy nylon netting at most craft or fabric stores.