Use a stiff brush and cleaning solution on non-porous surfaces.
For small areas (less than 1 square meter), you can handle the cleanup yourself [2]. Wear an N95 mask, gloves, and goggles. Cleaning Solutions: Harc a penГ©sz ellen
Use a dehumidifier in damp areas like basements. Use a stiff brush and cleaning solution on
To give you more specific advice for your situation, could you tell me: let it sit for 10 minutes
Spray on the surface, let it sit for 10 minutes, then scrub. Baking Soda: Mix with water to make a cleaning paste.