Colgate Extra Clean Toothbrush, Full Head, Soft (6 Count) – Link

Amazon has this currently marked down to only $3.24!

• • Circular power bristles to help remove tooth stains.
• • Easy-to-grip toothbrush handle provides comfort and control while brushing.
• • Cleaning tip bristles effectively reach and clean back teeth.
• • Helps to remove tooth surface stains to whiten teeth.
• • Available in Soft, Medium, and Firm bristle firmness.
• • Colors may vary.