Our ultra-concentrated laundry soaps are handmade in small batches in the USA. We never use fillers, parabens, phosphates, chlorine, artificial colors, or fragrances, making them ideal for those who have sensitive skin. Our laundry soap is safe for both septic systems and high-efficiency washing machines. To use: add 1 TBSP per regular load, 1/2 TBSP for high-efficiency machines.