Erin soaked the stain five days: brownish red, spilled over the right leg of her jeans. Each day she pulled them out of the bucket, inspected, scrubbed. Brown particles floated away from the fabric, but the stain remained bright. She went online and looked for stain remedies: Blood: soak in cold water. Use hydrogen peroxide for stubborn stains. She pulled out the hydrogen peroxide and dabbed some on. White foam fizzled, bubbling until it spread over her hands and wrists. “Out, damn spot,” she muttered to herself, scraping off foam to see if the peroxide had faded the stain. But the foam grew back, creeping up her arms, edging towards her neck.