Fix small bleach stains with Carpet Dye Pens. Easy to use; just heat and apply. No Mixing. No Mess. Each pen can cover about 100 (quarter size) spots. Use Dye Pen Remover to erase small mistakes. Use Bleach Neutralizer Pen to neutralize chlorine crystals. Dye Pens are ideal for small yellow or white bleach spots on nylon or wool carpet.