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For a standard cleaning solution, prepare a mixture of distilled white vinegar and hot water in the reservoir of your carpet cleaning machine. Fill approximately two-thirds of the reservoir with hot water, and then add distilled white vinegar to fill the remaining one-third. The speaker notes that while common recommendations are 1:1 or 2:1 (water to vinegar) ratios, she personally uses a stronger 3:1 ratio (hot water to vinegar) for better results, highlighting the importance of using hot water to enhance cleaning effectiveness.