The answer to 'my floor is filthy' is that there are several common causes, including heavy foot traffic, spills or tracked-in dirt, and improper cleaning methods. Symptoms may include visible dirt, grime, or stains, and the floor may feel gritty or uneven underfoot. To solve the problem, you'll need to thoroughly clean and potentially reseal or refinish the floor, depending on the material.
For DIY cleaning, start by sweeping or vacuuming to remove loose debris. Then use a suitable floor cleaner and mop or scrub the floor, focusing on high-traffic areas. If stains or deeper dirt remain, you may need to use a more powerful cleaning solution or rent a floor scrubber. However, for heavily soiled floors, extensive damage, or certain floor types, it's best to call in a professional cleaning service to ensure the job is done properly.