This first step sets the stage for effective fine particle cleaning by removing as much settled dust as possible from all horizontal surfaces.

These include:

• Floors (hard surface only)
• Baseboards and trim
• Window sills
• Counters
• Shelves
• Tops of doors, door frames, and light fixtures

Recommended methods:

• True HEPA vacuuming: Use a sealed HEPA vacuum to remove visible dust.
• Dry wiping: Follow with dry microfiber cloths or unscented electrostatic cloths (like Swiffer). Fold frequently to use clean sides and avoid redistributing dust.

Tips:

• Always clean from cleanest areas to dirtiest, and room to room in an organized sequence.
• Avoid feather dusters or other tools that stir up particles.
• Wear PPE while cleaning—even if you feel fine at first, stirring up contaminants can cause delayed reactions.

This step helps reduce the bulk of particle buildup and prepares surfaces for the next stages.