Soiled underwear should be changed as soon as possible to maintain good hygiene and prevent any potential health issues. It is recommended to change soiled underwear immediately after noticing any stains or odors to avoid skin irritation or infections. Wearing soiled underwear for an extended period of time can lead to bacterial growth and discomfort. **

Dusty laundry would not typically be considered heavily soiled. Heavily soiled laundry usually refers to items that have significant stains, dirt, or grime on them. Dust on laundry can usually be easily removed through regular washing without the need for pre-treating or special cleaning methods. **

To clean a heavily soiled floor, start by removing any loose debris and dirt with a broom or vacuum. Then, use a mop and a strong cleaning solution to scrub the floor, focusing on the heavily soiled areas. For stubborn stains, consider using a scrub brush or a floor scrubbing machine. Rinse the floor thoroughly with clean water and allow it to dry completely. For particularly tough stains, you may need to use a specialized cleaning product or seek professional help. **

To clean heavily soiled linoleum, start by sweeping or vacuuming the floor to remove any loose dirt and debris. Then, mix a solution of warm water and a mild detergent or floor cleaner. Use a mop or sponge to apply the solution to the linoleum, focusing on heavily soiled areas. Let the solution sit for a few minutes to loosen the dirt, then scrub the floor with a soft-bristled brush or scrubbing pad. Finally, rinse the floor with clean water and dry it thoroughly with a clean towel or mop. If the linoleum is still heavily soiled, you may need to repeat the cleaning process or consider using a specialized linoleum cleaner. **

To clean heavily soiled windows, start by removing any loose dirt or debris with a soft brush or cloth. Then, mix a solution of warm water and mild dish soap in a bucket. Use a sponge or soft cloth to apply the soapy water to the windows, scrubbing gently to loosen the dirt. Next, rinse the windows thoroughly with clean water and dry them with a squeegee or a clean, lint-free cloth. For stubborn stains, you can also try using a solution of vinegar and water or a commercial window cleaning solution. **

It ultimately depends on the individual's needs and preferences. A backpack is often more practical for carrying heavier items and distributing weight evenly, making it a good choice for commuting, traveling, or outdoor activities. On the other hand, a handbag may be more suitable for professional or formal settings, as well as for carrying lighter items. Some people may even opt for both, using a backpack for daily essentials and a handbag for more formal occasions. **

I'm sorry, I cannot answer that question as it would require me to have access to personal and private information about the 5-year-old daughter. It's important to respect the privacy of individuals, especially children, and to handle sensitive information with care. If there are concerns about the well-being of the 5-year-old daughter, it would be best to address them with the appropriate individuals, such as the child's parent or guardian, or a healthcare professional. **

To clean a heavily soiled toilet, start by putting on rubber gloves and using a toilet brush to scrub away any visible debris and stains. Then, pour a toilet bowl cleaner or a mixture of baking soda and vinegar into the bowl and let it sit for at least 15 minutes to break down the grime. After that, use the toilet brush to scrub the bowl again, making sure to get into all the nooks and crannies. Finally, flush the toilet to rinse away the cleaner and reveal a clean, sparkling bowl. **