To prepare for a professional carpet clean, remove small items and personal belongings from the rooms where carpets will be cleaned. This includes toys, shoes, and small furniture pieces. It's also helpful to vacuum the carpet beforehand to remove surface dirt and debris. Ensure that pets are kept in a safe area away from the cleaning space, and if possible, provide a clear path for the cleaners to bring in their equipment. Discuss any special considerations or concerns with your cleaners in advance, such as areas with heavier stains or high traffic.