The drying time for grout can vary depending on several factors, including the type of grout, temperature, humidity, and the specific product used. In general, grout can take anywhere from 24 to 72 hours to dry completely after cleaning. However, it's essential to consult the manufacturer's instructions or product label for the specific grout cleaner you are using, as some products may have different drying times or recommendations. It's also a good idea to ensure proper ventilation and airflow in the area to help speed up the drying process.