Historical clue formulations

• Certain unit of detergent — 2025-10-17
• Laundry product that was once the subject of a viral internet challenge — 2024-11-11
• It was once a challenge to eat — 2021-01-16
• Item in a toxic internet "challenge" — 2020-05-10
• Cleaning product in a dangerous 2010s viral internet challenge — 2019-07-07