@MalakAslan – Fleas at work? That is awful! I do live in an area where fleas seem to be prolific and I did have them in my home and bed at one time.
It takes lots of work and diligence to get rid of the fleas once they have made themselves at home. The food-grade diatomaceous earth and borate flea products are good examples of natural products that kill and help prevent fleas.
There are also some other natural products that can be used that seem to help in getting rid of fleas and preventing infestation.
Some that have help me or people I know are lavender, tea tree oil, and citrus products. You can find more information on the Internet.