The amount of dishwashing liquid consumed on average can vary depending on several factors, including individual habits, household size, frequency of dishwashing, and the concentration of the dishwashing liquid used. It's challenging to provide an exact figure for the average consumption, as it can differ significantly from one household to another.
However, as a rough estimate, a typical household may use approximately 2 to 4 fluid ounces (60 to 120 milliliters) of dishwashing liquid per week. This estimate assumes regular dishwashing for a family of four or five people.
It's important to note that dishwashing liquids are usually concentrated, and a small amount can produce a sufficient lather to clean a significant number of dishes. Following the instructions on the packaging regarding the recommended dosage can help ensure effective cleaning while minimizing excessive usage.
Keep in mind that individual habits, such as pre-rinsing dishes or using a dishwasher, can also influence the amount of dishwashing liquid consumed.