there isn't a universal standard or rule that dictates cleaning crews leaving the toilet seat up after cleaning public restrooms. The practice may vary depending on the specific cleaning crew or the policies of the establishment they work for. However, there are a few possible reasons for this behavior:
Signaling cleanliness: Leaving the toilet seat up can be a visual indicator to the public that the toilet has been recently cleaned. It shows that the cleaning crew has attended to the task and signals that the restroom is in a hygienic state.
Drying and disinfecting: Cleaning crews may lift the toilet seat to ensure that they thoroughly clean and disinfect the entire toilet, including areas that are not visible when the seat is down. It allows them to clean hard-to-reach areas effectively.
Preventing contamination: By lifting the seat, cleaning crews can avoid touching it directly with their hands. This minimizes the risk of cross-contamination between toilets and other surfaces during the cleaning process.
Efficiency and speed: Leaving the seat up might be more efficient and save time for the cleaning crew when they are cleaning multiple toilets in a short period. It can streamline their cleaning routine.
Communication to other staff: In some cases, the cleaning crew might leave the seat up as a way to communicate with other staff members, indicating that the restroom has already been cleaned.
Inconsistent practices: It's important to note that not all cleaning crews may follow this practice. Different cleaning companies or individuals may have their own approaches to cleaning restrooms, leading to variations in practices.
Remember that cleaning procedures and practices can differ based on the region, country, or establishment. If you encounter this behavior consistently in a particular location, it might be best to inquire with the establishment directly to understand their specific reasons for doing so.