Use doormats at every entrance
Remove shoes at the door
Vacuum regularly with a HEPA filter vacuum
Dust with a damp microfiber cloth
Mop hard floors frequently
Wash bedding weekly
Clean curtains, blinds, and upholstery often
Replace HVAC filters regularly
Keep windows closed on dusty days
Seal gaps around doors and windows
Use an air purifier with a HEPA filter
Reduce clutter and knickknacks
Groom pets regularly
Brush pets outdoors when possible
Store items in closed containers
Clean ceiling fans and vents regularly
Use exhaust fans in kitchens and bathrooms
Avoid dry dusting
Shake out rugs and mats outdoors
Clean under furniture and behind appliances
Keep indoor humidity at a moderate level