Don't toss that stiff whiteboard eraser

That stiff, dirty whiteboard eraser isn’t ruined — wash it with warm water and mild soap and it’ll work like new. The stiffness is just dried marker residue crusted into the felt, and it rinses right out.

Run it under warm water, work a little dish soap or hand soap into the felt, and massage it with your fingers until the suds turn dark. Rinse until the water