Mold on walls should not be a cause of panic. Indeed, mold can be a health threat and structural hazard, but as long as you know how to remove mold from walls, you’ll be all right. Mold-infested walls are usually easy to treat. If the infested wall is non-porous, you can easily remove the mold with a wet cloth and/or a mold-killing solution. If it is porous, however, it is likely that you will have to cut away the mold-infested area and replace it.