Sarah stared at the empty plastic bottle on her laundry room shelf, the iconic baby-blue logo of Ivory Snow mocking her. Her newborn, Leo, had skin as delicate as a peach, and this was the only detergent that didn't leave him in a flurry of red bumps.

They often stock the liquid version near the diapers.

She grabbed her keys and headed to the local grocery store. She checked the baby aisle. Nothing but heavy perfumes. She checked the cleaning aisle. Rows of neon jugs, but no Ivory.

Since availability fluctuates, grabbing a 2-pack online saves a future headache.