Whether a drywall anchor can be reused depends on its material, type, and the method of removal. Plastic anchors, including expansion and self-drilling types, are generally designed for single use as they tend to break or deform upon removal. Metal anchors, such as toggle bolts, are more durable and may be reusable if they are not damaged during extraction. However, with toggle bolts, the toggle piece can fall into the wall cavity when the bolt is removed, making it difficult to retrieve. If an anchor is damaged during removal, for instance by having its head cut off, it cannot be reused regardless of the material.

To maintain plaster walls, inspect them regularly for cracks and seal them early. Clean the walls by dusting regularly or using a gentle, damp cloth. It's also important to avoid moisture exposure. Repainting as needed will help maintain the wall's appearance and longevity.

If you suspect black mold is inside your walls, do not punch a hole in the drywall yourself to look. Call a mold inspection expert to help you. Some signs of a potential black mold infestation inside the wall include an unexplained musty, damp smell. Some people liken it to rotting vegetables. You may smell it most strongly through a wall outlet. If you and your family are experiencing constant coughing or symptoms that feel like an unexplained allergy, it could indicate black mold behind a wall.

Drywall can get wet and dry out without sustaining permanent damage, but only if the water damage is minor. If you have a small leak and are quick to correct the issue and set up blower fans and dehumidifiers, your drywall should dry out. If the leak is persistent, the drywall becomes totally waterlogged, or mold begins forming on the drywall, you should remove and replace it.