apply a paste of meat tenderizer and water to stain, scrub gently. for sweaty stains put 1/2 cup lemon juice or 2 lemons, hot water, 1 additional lemon and sunshine
pour half cup of lemon juice or squeeze 2 lemons into half full laundry tub of hot water. If full load, add twice as much lemon. Soak clothes for 1 hr or overnight, then put through wash cycle. add juice of 1 more lemon to rinse cycle, then hang in sun to dry. Lemon and sunshine make the best bleach.