Brush Head Replacement: Pinch the wires together near the head of the brush and slide the small circular metal piece down to remove old brush head- you may need pliers the first time you change it. Slide a new brush head on and slide the metal piece back to its original position to hold it tight. Refill heads have the option of coming coated with a natural plant varnish to reduce cracking or naturally uncoated.
How to Dispose: Heads can be demoted to household cleaning then home composted. Metal parts can be scrap metal recycled.