Measuring: For regular loads, fill cap to line 2 (2 fl oz). Use more (2.5 fl oz) for heavily soiled or large loads. For Tough Stains: Pretreat by applying some detergent directly to stains and rub into fabric. Allow formula to sit on stains for 5 minutes. For added power, use 3/4 cap of detergent in wash. Follow care label instructions, then sort. Follow washing machine instructions for adding detergent.